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Nikolaos Papageorgiou



Osebna bibliografija za obdobje 1985-2024





1985

1. PAPAGEORGIOU, Nikolaos. On the theory of Banach space valued multifunctions. 1, Integration and conditional expectation. Journal of Multivariate Analysis. 1985, vol. 17, iss. 2, str. 185-206. ISSN 0047-259X. http://dx.doi.org/10.1016/0047-259X(85)90078-8. [COBISS.SI-ID 17825625]
2. PAPAGEORGIOU, Nikolaos. On the theory of Banach space valued multifunctions. 2, Set valued martingales and set valued measures. Journal of Multivariate Analysis. 1985, vol. 17, iss. 2, str. 207-227. ISSN 0047-259X. http://doi.org/10.1016/0047-259X(85)90079-X, DOI: 10.1016/0047-259X(85)90079-X. [COBISS.SI-ID 18119769]
3. PAPAGEORGIOU, Nikolaos. Representation of set valued operators. Transactions of the American Mathematical Society. 1985, vol. 292, no. 2, str. 557-572. ISSN 0002-9947. http://dx.doi.org/10.2307/2000229, DOI: 10.2307/2000229. [COBISS.SI-ID 18100313]


1986

4. PAPAGEORGIOU, Nikolaos. Random fixed point theorems for measurable multifunctions in Banach spaces. Proceedings of the American Mathematical Society. 1986, vol. 97, iss. 3, str. 507-514. ISSN 0002-9939. http://dx.doi.org/10.2307/2046246. [COBISS.SI-ID 17826905]
5. PAPAGEORGIOU, Nikolaos. A stability result for differential inclusions in Banach spaces. Journal of mathematical analysis and applications. [Print ed.]. 1986, vol. 118, iss. 1, str. 232-246. ISSN 0022-247X. http://dx.doi.org/10.1016/0022-247X(86)90305-7, DOI: 10.1016/0022-247X(86)90305-7. [COBISS.SI-ID 18119513]


1989

6. PAPAGEORGIOU, Nikolaos. Properties of the relaxed trajectories of evolution equations and optimal control. SIAM journal on control and optimization. 1989, vol. 27, iss. 2, str. 267-288. ISSN 0363-0129. http://dx.doi.org/10.1137/0327014, DOI: 10.1137/0327014. [COBISS.SI-ID 18099033]


1995

7. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Generalizations of Browder's degree theory. Transactions of the American Mathematical Society. 1995, vol. 347, no. 1, str. 233-259. ISSN 0002-9947. http://dx.doi.org/10.2307/2154797, DOI: 10.2307/2154797. [COBISS.SI-ID 18098265]
8. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. On the existence of periodic solutions for nonconvex-valued differential inclusions in ▫$\mathbb{R}^N$▫. Proceedings of the American Mathematical Society. 1995, vol. 123, no. 10, str. 3043-3050. ISSN 0002-9939. http://dx.doi.org/10.2307/2160658, DOI: 10.2307/2160658. [COBISS.SI-ID 18100825]


1997

9. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Handbook of multivalued analysis. Volume I, Theory. Dordrecht; Boston; London: Kluwer, cop. 1997. XV, 968 str., ilustr. Mathematics and Its Applications, 419. ISBN 978-0-7923-4682-1. [COBISS.SI-ID 17877337]
10. PAPAGEORGIOU, Nikolaos. On the existence of solutions for nonlinear parabolic problems with nonmonotone discontinuities. Journal of mathematical analysis and applications. [Print ed.]. 1997, vol. 205, iss. 2, str. 434-453. ISSN 0022-247X. http://dx.doi.org/10.1006/jmaa.1997.5208, DOI: 10.1006/jmaa.1997.5208. [COBISS.SI-ID 18119257]


2000

11. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Handbook of multivalued analysis. Volume II, Applications. Dordrecht; Boston; London: Kluwer, cop. 2000. XI, 932 str., ilustr. Mathematics and Its Applications, 500. ISBN 978-0-7923-6164-0, ISBN 978-1-4615-4665-8. http://www.springer.com/gp/book/9780792361640. [COBISS.SI-ID 17878361]
12. KOUROGENIS, Nikolaos C., PAPAGEORGIOU, Nikolaos. Nonsmooth critical point theory and nonlinear elliptic equations at resonance. Journal of the Australian Mathematical Society. Series A, Pure mathematics and statistics. 2000, vol. 69, iss. 2, str. 245-271. ISSN 0263-6115. http://doi.org/10.1017/S1446788700002202. [COBISS.SI-ID 17826393]


2001

13. FIACCA, Antonella, MATZAKOS, Nikolaos, PAPAGEORGIOU, Nikolaos, SERVADEI, Raffaella. Nonlinear elliptic differential equations with multivalued nonlinearities. Proceedings of the Indian Academy of Sciences. Mathematical sciences. 2001, vol. 111, no. 4, str. 489-508. ISSN 0253-4142. http://dx.doi.org/10.1007/BF02829620. [COBISS.SI-ID 17088345]


2002

14. PAPAGEORGIOU, Nikolaos, 4th International Conference on "Dynamical Systems and Differential Equations" , University of North Carolina, Wilmington, NC, USA, May 24-27, 2002. Nonlinear boundary value problems with multivalued terms : Wilmington, 27. 5. 2002. [COBISS.SI-ID 17835865]
15. KYRITSI, Sophia Th., MATZAKOS, Nikolaos, PAPAGEORGIOU, Nikolaos. Periodic problems for strongly nonlinear second-order differential inclusions. Journal of differential equations. 2002, vol. 183, iss. 2, str. 279-302. ISSN 0022-0396. http://dx.doi.org/10.1006/jdeq.2001.4110, DOI: 10.1006/jdeq.2001.4110. [COBISS.SI-ID 18098009]


2003

16. DENKOWSKI, Zdzisław, MIGÓRSKI, Stanislaw, PAPAGEORGIOU, Nikolaos. An introduction to nonlinear analysis : applications. Boston; Dordrecht: Kluwer Academic/Plenum Publishers, cop. 2003. XII, 823 str. ISBN 978-0-306-47456-9. [COBISS.SI-ID 17885017]
17. DENKOWSKI, Zdzisław, MIGÓRSKI, Stanislaw, PAPAGEORGIOU, Nikolaos. An introduction to nonlinear analysis : theory. Boston; Dordrecht: Kluwer Academic/Plenum Publishers, cop. 2003. XV, 689 str. ISBN 978-0-306-47392-0, ISBN 978-1-4419-9158-4. http://dx.doi.org/10.1007/978-1-4419-9158-4. [COBISS.SI-ID 17883737]


2004

18. MOTREANU, Dumitru, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear elliptic equations at resonance with a nonsmooth potential. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2004, vol. 56, iss. 8, str. 1211-1234. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2003.11.011, DOI: 10.1016/j.na.2003.11.011. [COBISS.SI-ID 18125401]
19. KYRITSI, Sophia Th., PAPAGEORGIOU, Nikolaos. Multiple solutions of constant sign for nonlinear nonsmooth eigenvalue problems near resonance. Calculus of variations and partial differential equations. 2004, vol. 20, no. 1, str. 1-24. ISSN 0944-2669. http://dx.doi.org/10.1007/s00526-003-0223-z, DOI: 10.1007/s00526-003-0223-z. [COBISS.SI-ID 18117465]
20. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Periodic solutions for nonautonomous systems with nonsmooth quadratic or superquadratic potential. Topological Methods in Nonlinear Analysis. 2004, vol. 24, no. 2, str. 269-296. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2004.028. [COBISS.SI-ID 17992281]
21. PAPAGEORGIOU, Evgenia H., PAPAGEORGIOU, Nikolaos. Two nontrivial solutions for quasilinear periodic equations. Proceedings of the American Mathematical Society. Feb. 2004, vol. 132, no. 2, str. 429-434. ISSN 0002-9939. https://doi.org/10.1090/S0002-9939-03-07076-X, DOI: 10.1090/S0002-9939-03-07076-X. [COBISS.SI-ID 28102659]


2005

22. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear analysis. Boca Raton: Chapman & Hall/CRC, cop. 2005. XI, 971 str. Series in mathematical analysis and applications (Print), 9. ISBN 978-1-58488-484-2. ISSN 1028-8600. [COBISS.SI-ID 17878617]
23. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonsmooth critical point theory and nonlinear boundary value problems. Boca Raton: Chapman & Hall/CRC, cop. 2005. XIII, 775 str. Series in mathematical analysis and applications (Print), 8. ISBN 978-1-58488-485-9. ISSN 1028-8600. [COBISS.SI-ID 17878873]


2006

24. FILIPPAKIS, Michael E., GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiplicity results for nonlinear Neumann problems. Canadian journal of mathematics. 2006, vol. 58, no. 1, str. 64-92. ISSN 0008-414X. http://dx.doi.org/10.4153/CJM-2006-004-6, DOI: 10.4153/CJM-2006-004-6. [COBISS.SI-ID 18104665]
25. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Periodic solutions for second order differential inclusions with the scalar ▫$p$▫-Laplacian. Journal of mathematical analysis and applications. [Print ed.]. 2006, vol. 322, iss. 2, str. 913-929. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2005.09.077, DOI: 10.1016/j.jmaa.2005.09.077. [COBISS.SI-ID 18098521]
26. KANDILAKIS, Dimitrios, KOUROGENIS, Nikolaos C., PAPAGEORGIOU, Nikolaos. Two nontrivial critical points for nonsmooth functionals via local linking and applications. Journal of global optimization. 2006, vol. 34, iss. 2, str. 219-244. ISSN 0925-5001. http://dx.doi.org/10.1007/s10898-005-3884-7, DOI: 10.1007/s10898-005-3884-7. [COBISS.SI-ID 18093145]


2007

27. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. A degree theoretic approach for multiple solutions of constant sign for nonlinear elliptic equations. Manuscripta mathematica. 2007, vol. 124, iss. 4, str. 507-531. ISSN 0025-2611. http://dx.doi.org/10.1007/s00229-007-0127-x, DOI: 10.1007/s00229-007-0127-x. [COBISS.SI-ID 18084953]
28. MOTREANU, Dumitru, PAPAGEORGIOU, Nikolaos. Existence and multiplicity of solutions for Neumann problems. Journal of differential equations. 2007, vol. 232, iss. 1, str. 1-35. ISSN 0022-0396. http://dx.doi.org/10.1016/j.jde.2006.09.008, DOI: 10.1016/j.jde.2006.09.008. [COBISS.SI-ID 18084185]
29. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Multiple nontrivial solutions for nonlinear eigenvalue problems. Proceedings of the American Mathematical Society. 2007, vol. 135, no. 11, str. 3649-3658. ISSN 0002-9939. http://dx.doi.org/10.1090/S0002-9939-07-08927-7, DOI: 10.1090/S0002-9939-07-08927-7. [COBISS.SI-ID 18101081]
30. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Multiple nontrivial solutions for nonlinear periodic problems with the ▫$p$▫-Laplacian. Journal of differential equations. 2007, vol. 243, iss. 2, str. 504-535. ISSN 0022-0396. http://dx.doi.org/10.1016/j.jde.2007.05.012, DOI: 10.1016/j.jde.2007.05.012. [COBISS.SI-ID 18104153]
31. PAPAGEORGIOU, Evgenia H., PAPAGEORGIOU, Nikolaos. A multiplicity theorem for problems with the p-Laplacian. Journal of functional analysis. 2007, vol. 244, iss. 1, str. 63-77. ISSN 0022-1236. http://dx.doi.org/10.1016/j.jfa.2006.11.015, DOI: 10.1016/j.jfa.2006.11.015. [COBISS.SI-ID 18084441]
32. BARLETTA, Giuseppina, PAPAGEORGIOU, Nikolaos. A multiplicity theorem for the Neumann ▫$p$▫-Laplacian with an asymmetric nonsmooth potential. Journal of global optimization. 2007, vol. 39, iss. 3, str. 365-392. ISSN 0925-5001. http://dx.doi.org/10.1007/s10898-007-9142-4, DOI: 10.1007/s10898-007-9142-4. [COBISS.SI-ID 18129241]


2008

33. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Degree theory for operators of monotone type and nonlinear elliptic equations with inequality constraints. Providence: American Mathematical Society, 2008. VI, 70 str. Memoirs of the American Mathematical Society, no. 915. ISBN 978-0-8218-4192-1. ISSN 0065-9266. [COBISS.SI-ID 14964057]
34. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. Eigenvalue problems for hemivariational inequalities. Set-valued analysis. 2008, vol. 16, no. 7-8, str. 1061-1087. ISSN 0927-6947. http://dx.doi.org/10.1007/s11228-008-0100-1, DOI: 10.1007/s11228-008-0100-1. [COBISS.SI-ID 18086745]
35. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Existence and multiplicity of solutions for Neumann ▫$p$▫-Laplacian-type equations. Advanced nonlinear studies. 2008, vol. 8, iss. 4, str. 843-870. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2008-0411, DOI: 10.1515/ans-2008-0411. [COBISS.SI-ID 18092889]
36. FILIPPAKIS, Michael E., PAPAGEORGIOU, Nikolaos. Multiple constant sign and nodal solutions for nonlinear elliptic equations with the ▫$p$▫-Laplacian. Journal of differential equations. 2008, vol. 245, iss. 7, str. 1883-1922. ISSN 0022-0396. http://doi.org/10.1016/j.jde.2008.07.004, DOI: 10.1016/j.jde.2008.07.004. [COBISS.SI-ID 18075225]
37. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Multiple positive solutions for nonlinear eigenvalue problems with the ▫$p$▫-Laplacian. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2008, vol. 69, iss. 12, str. 4286-4300. ISSN 0362-546X. http://doi.org/10.1016/j.na.2007.10.053. [COBISS.SI-ID 18075481]
38. PAPAGEORGIOU, Nikolaos, ROCHA, Eugénio M., STAICU, Vasile. A multiplicity theorem for hemivariational inequalities with a ▫$p$▫-Laplacian-like differential operator. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2008, vol. 69, iss. 4, str. 1150-1163. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2007.06.023. [COBISS.SI-ID 18104409]
39. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. On the existence of multiple nontrivial solutions for resonant Neumann problems. Journal of nonlinear and convex analysis. 2008, vol. 9, no. 3, str. 351-360. ISSN 1345-4773. http://www.ybook.co.jp/online2/opjnca/vol9/p351.html. [COBISS.SI-ID 18087257]
40. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Positive solutions and multiple solutions at non-resonance, resonance and near resonance for hemivariational inequalities with ▫$p$▫-Laplacian. Transactions of the American Mathematical Society. 2008, vol. 360, no. 5, str. 2527-2545. ISSN 0002-9947. http://dx.doi.org/10.1090/S0002-9947-07-04449-2, DOI: 10.1090/S0002-9947-07-04449-2. [COBISS.SI-ID 18100569]
41. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. Three nontrivial solutions for the ▫$p$▫-Laplacian with a nonsmooth potential. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2008, vol. 68, no. 12, str. 3812-3827. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2007.04.021, DOI: 10.1016/j.na.2007.04.021. [COBISS.SI-ID 18087001]


2009

42. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Existence of multiple solutions with precise sign information for superlinear Neumann problems. Annali di matematica pura ed applicata. 2009, vol. 188, no. 4, str. 679-719. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-009-0096-7, DOI: 10.1007/s10231-009-0096-7. [COBISS.SI-ID 18090073]
43. IANNIZZOTTO, Antonio, PAPAGEORGIOU, Nikolaos. Existence of three nontrivial solutions for nonlinear Neumann hemivariational inequalities. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 70, iss. 9, str. 3285-3297. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2008.04.033, DOI: 10.1016/j.na.2008.04.033. [COBISS.SI-ID 18067289]
44. O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. The existence of two nontrivial solutions via homological local linking for the non-coercive ▫$p$▫-Laplacian Neumann problem. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 70, iss. 12, str. 4386-4392. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2008.10.021, DOI: 10.1016/j.na.2008.10.021. [COBISS.SI-ID 18069593]
45. PAPAGEORGIOU, Nikolaos, KYRITSI, Sophia Th. Handbook of applied analysis. Dordrecht: Springer, cop. 2009. XXIII, 793 str. Advances in mechanics and mathematics (Monographic series. Print), 19. ISBN 978-0-387-78906-4, ISBN 978-0-387-78907-1. ISSN 1571-8689. http://dx.doi.org/10.1007/b120946. [COBISS.SI-ID 17879129]
46. BARLETTA, Giuseppina, PAPAGEORGIOU, Nikolaos. Multiple nontrivial solutions for semilinear elliptic problems. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 71, iss. 10, str. 4321-4345. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2009.03.038, DOI: 10.1016/j.na.2009.03.038. [COBISS.SI-ID 18070361]
47. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nodal and multiple constant sign solutions for resonant ▫$p$▫-Laplacian equations with a nonsmooth potential. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 71, iss. 11, str. 5747-5772. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2009.04.063, DOI: 10.1016/j.na.2009.04.063. [COBISS.SI-ID 18069849]
48. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Nonlinear elliptic equations with an asymptotically linear reaction term. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 71, iss. 7-8, str. 3129-3151. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2009.01.224, DOI: 10.1016/j.na.2009.01.224. [COBISS.SI-ID 18070617]
49. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Nonlinear Neumann problems near resonance. Indiana University mathematics journal. 2009, vol. 58, iss. 3, str. 1257-1279. ISSN 0022-2518. http://dx.doi.org/10.1512/iumj.2009.58.3565, DOI: 10.1512/iumj.2009.58.3565. [COBISS.SI-ID 18098777]
50. PAPAGEORGIOU, Nikolaos, ROCHA, Eugénio M. Pairs of positive solutions for ▫$p$▫-Laplacian equations with sublinear and superlinear nonlinearities which do not satisfy the AR-condition. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 70, iss. 11, str. 3854-3863. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2008.07.042, DOI: 10.1016/j.na.2008.07.042. [COBISS.SI-ID 18067033]
51. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. The spectrum and an index formula for the Neumann ▫$p$▫-Laplacian and multiple solutions for problems with a crossing nonlinearity. Discrete and continuous dynamical systems. 2009, vol. 25, iss. 2, str. 431-456. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2009.25.431, DOI: 10.3934/dcds.2009.25.431. [COBISS.SI-ID 18120025]


2010

52. KRISTÁLY, Alexandru, PAPAGEORGIOU, Nikolaos. Multiple nontrivial solutions for Neumann problems involving the ▫$p$▫-Laplacian: a Morse theoretical approach. Advanced nonlinear studies. 2010, vol. 10, iss. 1, str. 83-107. ISSN 1536-1365. [COBISS.SI-ID 17597017]
53. FILIPPAKIS, Michael E., PAPAGEORGIOU, Nikolaos. Multiple nontrivial solutions for resonant Neumann problems. Mathematische Nachrichten. 2010, vol. 283, no. 7, str. 1000-1014. ISSN 0025-584X. http://dx.doi.org/10.1002/mana.200710045. [COBISS.SI-ID 17609049]
54. DENKOWSKI, Zdzisław, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonautonomous second order periodic systems. Acta Mathematica Scientia. Jan. 2010, vol. 30, iss. 1, str. 350-358. ISSN 0252-9602. https://doi.org/10.1016/S0252-9602(10)60051-3, DOI: 10.1016/S0252-9602(10)60051-3. [COBISS.SI-ID 18683225]
55. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Multiplicity of solutions for parametric ▫$p$▫-Laplacian equations with nonlinearity concave near the origin. Tohoku mathematical journal. 2010, vol. 62, no. 1, str. 137-162. ISSN 0040-8735. http://dx.doi.org/10.2748/tmj/1270041030. [COBISS.SI-ID 17575257]
56. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. A multiplicity theorem for double resonant periodic problems. Advanced nonlinear studies. 2010, vol. 10, iss. 4, str. 819-836. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2010-0405, DOI: 10.1515/ans-2010-0405. [COBISS.SI-ID 17608281]
57. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. Nontrivial solutions for nonvariational quasilinear Neumann problems. Topological Methods in Nonlinear Analysis. 2010, vol. 36, no. 1, str. 39-59. ISSN 1230-3429. https://projecteuclid.org/download/pdf_1/euclid.tmna/1461251063. [COBISS.SI-ID 18086489]
58. KYRITSI, Sophia Th., PAPAGEORGIOU, Nikolaos. On superquadratic periodic systems with indefinite linear part. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2010, vol. 72, iss. 2, str. 946-954. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2009.07.035. [COBISS.SI-ID 17611097]
59. FILIPPAKIS, Michael E., O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. Positive solutions and bifurcation phenomena for nonlinear elliptic equations of logistic type: the superdiffusive case. Communications on pure and applied analysis. 2010, vol. 9, no. 6, str. 1507 - 1527. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2010.9.1507. [COBISS.SI-ID 17602649]


2011

60. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Anisotropic nonlinear Neumann problems. Calculus of variations and partial differential equations. 2011, vol. 42, iss. 3, str. 323-354. ISSN 0944-2669. http://dx.doi.org/10.1007/s00526-011-0390-2. [COBISS.SI-ID 17577561]
61. PAPAGEORGIOU, Nikolaos, ROCHA, Eugénio M. Existence of three nontrivial solutions for asymptotically ▫$p$▫-linear noncoercive ▫$p$▫-Laplacian equations. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2011, vol. 74, iss. 16, str. 5314-5326. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2011.05.014. [COBISS.SI-ID 17806937]
62. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Multiple constant sign and nodal solutions for nonlinear Neumann eigenvalue problems. Annali della Scuola normale superiore di Pisa. Classe di scienze. 2011, vol. 10, iss. 3, str. 729-755. ISSN 0391-173X. http://dx.doi.org/10.2422/2036-2145.2011.3.09, http://annaliscienze.sns.it/index.php?page=Article&id=225. [COBISS.SI-ID 17575513]
63. MOTREANU, Dumitru, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear Neumann problems driven by a nonhomogeneous differential operator. Proceedings of the American Mathematical Society. 2011, vol. 139, no. 10, str. 3527-3535. ISSN 0002-9939. http://dx.doi.org/10.1090/S0002-9939-2011-10884-0. [COBISS.SI-ID 17575001]
64. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear Neumann problems with asymmetric reaction, via Morse theory. Advanced nonlinear studies. 2011, vol. 11, iss. 4, str. 781-808. ISSN 1536-1365. [COBISS.SI-ID 17596505]
65. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Nonlinear Neumann equations driven by a nonhomogeneous differential operator. Communications on pure and applied analysis. 2011, vol. 10, no. 4, str. 1055 - 1078. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2011.10.1055. [COBISS.SI-ID 17602393]
66. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nonlinear resonant periodic problems with concave terms. Journal of mathematical analysis and applications. [Print ed.]. 2011, vol. 375, iss. 1, str. 342-364. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2010.09.009. [COBISS.SI-ID 17579865]
67. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. On ▫$p$▫-Laplace equations with concave terms and asymmetric perturbations. Proceedings. Section A, Mathematics. 2011, vol. 141, iss. 1, str. 171-192. ISSN 0308-2105. http://dx.doi.org/10.1017/S0308210509001656. [COBISS.SI-ID 17580121]
68. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Positive solutions for nonlinear periodic problems with concave terms. Journal of mathematical analysis and applications. [Print ed.]. 2011, vol. 381, iss. 2, str. 866-883. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2011.04.013. [COBISS.SI-ID 17607513]
69. MOTREANU, Dumitru, O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. A unified treatment using critical point methods of the existence of multiple solutions for superlinear and sublinear Neumann problems. Communications on pure and applied analysis. 2011, vol. 10, no. 6, str. 1791-1816. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2011.10.1791. [COBISS.SI-ID 17596761]


2012

70. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Bifurcation-type results for nonlinear parametric elliptic equations. Proceedings. Section A, Mathematics. 2012, vol. 142, iss. 13, str. 595-623. ISSN 0308-2105. http://dx.doi.org/10.1017/S0308210511000126. [COBISS.SI-ID 17583449]
71. PAPAGEORGIOU, Nikolaos, PAPALINI, Francesca. Constant sign and nodal solutions for logistic-type equations with equidiffusive reaction. Monatshefte für Mathematik. [Print ed.]. 2012, vol. 165, no. 1, str. 91-116. ISSN 0026-9255. http://dx.doi.org/10.1007/s00605-010-0257-1. [COBISS.SI-ID 17605977]
72. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Dirichlet problems with double resonance and an indefinite potential. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2012, vol. 75, iss. 12, str. 4560-4595. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2011.09.014. [COBISS.SI-ID 17580633]
73. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Double resonance for Dirichlet problems with unbounded indefinite potential and combined nonlinearities. Communications on pure and applied analysis. 2012, vol. 11, no. 5, str. 2005-2021. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2012.11.2005. [COBISS.SI-ID 17634905]
74. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for asymptotically ▫$(p-1)$▫-homogeneous ▫$p$▫-Laplacian equations. Journal of functional analysis. 2012, vol. 262, iss. 5, str. 2403-2435. ISSN 0022-1236. http://dx.doi.org/10.1016/j.jfa.2011.12.003. [COBISS.SI-ID 17809753]
75. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear coercive problems with a nonhomogeneous differential operator and a nonsmooth potential. Set-valued and variational analysis. 2012, vol. 20, iss. 3, str. 417-443. ISSN 1877-0533. http://dx.doi.org/10.1007/s11228-011-0198-4. [COBISS.SI-ID 17576793]
76. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Multiple solutions to a Dirichlet problem with ▫$p$▫-Laplacian and nonlinearity depending on a parameter. Advances in nonlinear analysis. [Print ed.]. 2012, vol. 1, iss. 3, str. 257-275. ISSN 2191-9496. http://dx.doi.org/10.1515/anona-2012-0005. [COBISS.SI-ID 17597273]
77. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Neumann problems resonant at zero and infinity. Annali di matematica pura ed applicata. 2012, vol. 191, iss. 3, str. 395-430. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-011-0188-z. [COBISS.SI-ID 17809497]
78. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonhomogeneous nonlinear Dirichlet problems with a ▫$p$▫-superlinear reaction. Abstract and applied analysis. 2012, vol. 2012, art. 918271 (28 str.). ISSN 1085-3375. http://dx.doi.org/10.1155/2012/918271. [COBISS.SI-ID 17585497]
79. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear elliptic equations with singular terms and combined nonlinearities. Annales Henri Poincaré. 2012, vol. 13, iss. 3, str. 481-512. ISSN 1424-0637. http://dx.doi.org/10.1007/s00023-011-0129-9. [COBISS.SI-ID 17795673]
80. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. On resonant Neumann problems. Mathematische Annalen. 2012, vol. 354, iss. 3, str. 1117-1145. ISSN 0025-5831. http://dx.doi.org/10.1007/s00208-011-0763-z. [COBISS.SI-ID 17811801]
81. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Positive solutions for nonlinear Neumann problems with concave and convex terms. Positivity. 2012, vol. 16, iss. 2, str. 271-296. ISSN 1385-1292. http://dx.doi.org/10.1007/s11117-011-0124-x. [COBISS.SI-ID 17804377]
82. KYRITSI, Sophia Th., PAPAGEORGIOU, Nikolaos. Positive solutions for the periodic scalar ▫$p$▫-Laplacian: existence and uniqueness. Taiwanese journal of mathematics. 2012, vol. 16, no. 4, str. 1345-1361. ISSN 1027-5487. https://projecteuclid.org/download/pdf_1/euclid.twjm/1500406738. [COBISS.SI-ID 18218073]
83. MUGNAI, Dimitri, PAPAGEORGIOU, Nikolaos. Resonant nonlinear Neumann problems with indefinite weight. Annali della Scuola normale superiore di Pisa. Classe di scienze. 2012, vol. 11, no. 4, str. 729-788. ISSN 0391-173X. http://annaliscienze.sns.it/index.php?page=Article&id=256. [COBISS.SI-ID 17585753]


2013

84. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Constant-sign and nodal solutions of coercive ▫$(p,q)$▫-Laplacian problems. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2013, vol. 77, str. 118-129. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2012.09.007. [COBISS.SI-ID 17577305]
85. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Existence and uniqueness of positive solutions for the Neumann ▫$p$▫-Laplacian. Positivity. 2013, vol. 17, iss. 2, str. 309-332. ISSN 1385-1292. http://dx.doi.org/10.1007/s11117-012-0168-6. [COBISS.SI-ID 17807961]
86. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear Dirichlet problems with concave terms. Mathematica Scandinavica. 2013, vol. 113, no. 2, str. 206-247. ISSN 0025-5521. http://www.mscand.dk/article/view/15570. [COBISS.SI-ID 17808217]
87. KYRITSI, Sophia Th., PAPAGEORGIOU, Nikolaos. Multiple solutions for nonlinear elliptic equations with an asymmetric reaction term. Discrete and continuous dynamical systems. 2013, vol. 33, no. 6, str. 2469-2494. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2013.33.2469. [COBISS.SI-ID 17806425]
88. KYRITSI, Sophia Th., PAPAGEORGIOU, Nikolaos. Multiple solutions for superlinear Dirichlet problems with an indefinite potential. Annali di matematica pura ed applicata. 2013, vol. 192, no. 2, str. 297-315. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-011-0224-z. [COBISS.SI-ID 17806681]
89. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nodal and multiple solutions for nonlinear periodic problems with competing nonlinearities. Communications in contemporary mathematics. 2013, vol. 15, no. 3, article 1350001 (29 str.). ISSN 0219-1997. http://dx.doi.org/10.1142/S0219199713500016. [COBISS.SI-ID 17808985]
90. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. On nonlinear nonhomogeneous resonant Dirichlet equations. Pacific journal of mathematics. 2013, vol. 264, no. 2, str. 421-453. ISSN 0030-8730. http://dx.doi.org/10.2140/pjm.2013.264.421. [COBISS.SI-ID 17605209]
91. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. On ▫$p$▫-superlinear equations with a nonhomogeneous differential operator. NoDEA. [Print ed.]. 2013, vol. 20, iss. 2, str. 151-175. ISSN 1021-9722. http://dx.doi.org/10.1007/s00030-012-0187-9. [COBISS.SI-ID 17580377]
92. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. A pair of positive solutions for the Dirichlet ▫$p(z)$▫-Laplacian with concave and convex nonlinearities. Journal of global optimization. 2013, vol. 56, iss. 4, str. 1347-1360. ISSN 0925-5001. http://dx.doi.org/10.1007/s10898-011-9841-8. [COBISS.SI-ID 17808729]
93. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Pairs of nontrivial solutions for resonant Neumann problems. Journal of mathematical analysis and applications. [Print ed.]. 2013, vol. 398, iss. 2, str. 649-663. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2012.09.034. [COBISS.SI-ID 17809241]
94. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Positive solutions to a Dirichlet problem with ▫$p$▫-Laplacian and concave-convex nonlinearity depending on a parameter. Communications on pure and applied analysis. 2013, vol. 12, iss. 2, str. 815-829. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2013.12.815. [COBISS.SI-ID 17577049]
95. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Semilinear Neumann problems with indefinite and unbounded potential and crossing nonlinearity. V: SERRIN, James (ur.), MITIDIERI, Enzo L. (ur.), RǍDULESCU, Vicenţiu (ur.). Recent trends in nonlinear partial differential equations. II, Stationary problems : workshop in honor of Patrizia Pucci's 60th Birthday "Nonlinear Partial Differential Equations", May 28-June 1, 2012 University of Perugia, Perugia, Italy. Workshop in Honor of Patrizia Pucci's 60th Birthday Nonlinear Partial Differential Equations, May 28-June 1, 2012 University of Perugia. Providence: American Mathematical Society, cop. 2013. Str. 293-315. Contemporary mathematics, 595. ISBN 978-0-8218-9861-1, ISBN 978-1-4704-0993-7. ISSN 0271-4132. http://dx.doi.org/10.1090/conm/595/11801. [COBISS.SI-ID 16742233]


2014

96. BARLETTA, Giuseppina, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. A nonlinear eigenvalue problem for the periodic scalar p-Laplacian. Communications on pure and applied analysis. May 2014, vol. 13, no. 3, str. 1075-1086. ISSN 1534-0392. https://doi.org/10.3934/cpaa.2014.13.1075, DOI: 10.3934/cpaa.2014.13.1075. [COBISS.SI-ID 18284633]
97. MUGNAI, Dimitri, PAPAGEORGIOU, Nikolaos. Bifurcation for positive solutions of nonlinear diffusive logistic equations in ▫$\mathbb{R}^N$▫ with indefinite weight. Indiana University mathematics journal. 2014, vol. 63, iss. 5, str. 1397-1418. ISSN 0022-2518. https://doi.org/10.1512/iumj.2014.63.5369, DOI: 10.1512/iumj.2014.63.5369. [COBISS.SI-ID 18285145]
98. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Bifurcation near infinity for the Neumann problem with concave-convex nonlinearities. Comptes rendus. Mathématique. 2014, vol. 352, iss. 10, str. 811-816. ISSN 1631-073X. http://dx.doi.org/10.1016/j.crma.2014.08.009. [COBISS.SI-ID 17203033]
99. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Bifurcation near the origin for the Robin problem with concave-convex nonlinearities. Comptes rendus. Mathématique. 2014, vol. 352, iss. 7-8, str. 627-632. ISSN 1631-073X. http://dx.doi.org/10.1016/j.crma.2014.05.007. [COBISS.SI-ID 17108057]
100. CARDINALI, Tiziana, PAPAGEORGIOU, Nikolaos, RUBBIONI, Paola. Bifurcation phenomena for nonlinear superdiffusive Neumann equations of logistic type. Annali di matematica pura ed applicata. 2014, vol. 193, iss. 1, str. 1-21. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-012-0263-0. [COBISS.SI-ID 17804633]
101. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Combined effects of singular and sublinear nonlinearities in some elliptic problems. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2014, vol. 109, str. 236-244. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2014.06.016. [COBISS.SI-ID 17203545]
102. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Constant-sign and nodal solutions to a Dirichlet problem with ▫$p$▫-Laplacian and nonlinearity depending on a parameter. Proceedings of the Edinburgh Mathematical Society. 2014, vol. 57, iss. 2, str. 521-532. ISSN 0013-0915. http://dx.doi.org/10.1017/S0013091513000515. [COBISS.SI-ID 17822553]
103. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Dirichlet ▫$(p,q)$▫-equations at resonance. Discrete and continuous dynamical systems. 2014, vol. 34, no. 5, str. 2037-2060. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2014.34.2037. [COBISS.SI-ID 17603929]
104. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Exercises in analysis. Part 1. Cham: Springer, cop. 2014. X, 1037 str. Problem Books in Mathematics. ISBN 978-3-319-06175-7, ISBN 978-3-319-06176-4. ISSN 0941-3502. http://dx.doi.org/10.1007/978-3-319-06176-4. [COBISS.SI-ID 17675865]
105. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Existence and nonexistence of positive solutions for parametric Neumann problems with ▫$p$▫-Laplacian. Tohoku mathematical journal. 2014, vol. 66, no. 1, str. 137-153. ISSN 0040-8735. https://doi.org/10.2748/tmj/1396875667, DOI: 10.2748/tmj/1396875667. [COBISS.SI-ID 18284889]
106. IANNIZZOTTO, Antonio, PAPAGEORGIOU, Nikolaos. Existence, nonexistence and multiplicity of positive solutions for parametric nonlinear elliptic equations. Osaka Journal of Mathematics. 2014, vol. 51, no. 1, str. 179-203. ISSN 0030-6126. https://projecteuclid.org/euclid.ojm/1396966231, DOI: euclid.ojm/1396966231. [COBISS.SI-ID 18285401]
107. FILIPPAKIS, Michael E., O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. Multiple and nodal solutions for nonlinear equations with a nonhomogeneous differential operator and concave-convex terms. Tohoku mathematical journal. 2014, vol. 66, no. 4, str. 583-608. ISSN 0040-8735. https://projecteuclid.org/euclid.tmj/1432229198, DOI: 10.2748/tmj/1432229198. [COBISS.SI-ID 18272601]
108. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for a class of nonlinear Neumann eigenvalue problems. Communications on pure and applied analysis. 2014, vol. 13, iss. 4, str. 1491-1512. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2014.13.1491. [COBISS.SI-ID 17805401]
109. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiple solutions with precise sign for nonlinear parametric Robin problems. Journal of differential equations. 2014, vol. 256, iss. 7, str. 2449-2479. ISSN 0022-0396. http://dx.doi.org/10.1016/j.jde.2014.01.010. [COBISS.SI-ID 16895833]
110. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Multiplicity of solutions for a class of nonlinear nonhomogeneous elliptic equations. Journal of nonlinear and convex analysis. 2014, vol. 15, no. 1, str. 7-34. ISSN 1345-4773. http://www.ybook.co.jp/online2/opjnca/vol15/p7.html. [COBISS.SI-ID 18285657]
111. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiplicity of solutions for Neumann problems resonant at any eigenvalue. Kyoto journal of mathematics. 2014, vol. 54, no. 2, str. 259-269. ISSN 2156-2261. http://dx.doi.org/10.1215/21562261-2642386, DOI: 10.1215/21562261-2642386. [COBISS.SI-ID 18283609]
112. BARLETTA, Giuseppina, PAPAGEORGIOU, Nikolaos. A multiplicity theorem for ▫$p$▫-superlinear Neumann problems with a nonhomogeneous differential operator. Advanced nonlinear studies. 2014, vol. 14, iss. 4, str. 895-913. ISSN 1536-1365. https://doi.org/10.1515/ans-2014-0405, DOI: 10.1515/ans-2014-0405. [COBISS.SI-ID 18272857]
113. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nodal solutions for nonlinear nonhomogeneous Neumann equations. Topological Methods in Nonlinear Analysis. 2014, vol. 43, no. 2, str. 421-438. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2014.025. [COBISS.SI-ID 17814361]
114. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Nonlinear Dirichlet problems with a crossing reaction. Communications on pure and applied analysis. 2014, vol. 13, no. 6, str. 2749-2766. ISSN 1534-0392. https://doi.org/10.3934/cpaa.2014.13.2749, DOI: 10.3934/cpaa.2014.13.2749. [COBISS.SI-ID 18283353]
115. PAPAGEORGIOU, Nikolaos, PAPALINI, Francesca. Nonlinear resonant periodic problems. Differential and integral equations. 2014, vol. 27, no. 11-12, str. 1107-1146. ISSN 0893-4983. https://projecteuclid.org/euclid.die/1408366786. [COBISS.SI-ID 18273113]
116. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. On a parametric nonlinear Dirichlet problem with subdiffusive and equidiffusive reaction. Advanced nonlinear studies. Aug. 2014, vol. 14, iss. 3, str. 565-591. ISSN 1536-1365. https://doi.org/10.1515/ans-2014-0303, DOI: 10.1515/ans-2014-0303. [COBISS.SI-ID 18281817]
117. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. On generalized logistic equations with a non-homogeneous differential operator. Dynamical systems. 2014, vol. 29, no. 2, str. 190-207. ISSN 1468-9367. http://dx.doi.org/10.1080/14689367.2013.870125. [COBISS.SI-ID 17805913]
118. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. A pair of positive solutions for ▫$(p, q)$▫-equations with combined nonlinearities. Communications on pure and applied analysis. 2014, vol. 13, iss. 1, str. 203-215. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2014.13.203. [COBISS.SI-ID 17808473]
119. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Positive solutions for Neumann problems with indefinite and unbounded potential. Applied Mathematics Letters. [Print ed.]. 2014, vol. 35, str. 7-11. ISSN 0893-9659. http://dx.doi.org/10.1016/j.aml.2014.04.006. [COBISS.SI-ID 16974169]
120. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Positive solutions for nonlinear nonhomogeneous Neumann equations of superdiffusive type. Journal of fixed point theory and its applications. 2014, vol. 15, iss. 2, str. 519-535. ISSN 1661-7738. http://dx.doi.org/10.1007/s11784-014-0176-1. [COBISS.SI-ID 17220953]
121. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for parametric equidiffusive ▫$p$▫-Laplacian equations. Acta Mathematica Scientia. May 2014, vol. 34, iss. 3, str. 610-618. ISSN 0252-9602. https://doi.org/10.1016/S0252-9602(14)60033-3, DOI: 10.1016/S0252-9602(14)60033-3. [COBISS.SI-ID 18284377]
122. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Qualitative phenomena for some classes of quasilinear elliptic equations with multiple resonance. Applied mathematics and optimization. 2014, vol. 69, iss. 3, str. 393-430. ISSN 0095-4616. http://dx.doi.org/10.1007/s00245-013-9227-z. [COBISS.SI-ID 17009497]
123. PAPAGEORGIOU, Nikolaos, PAPALINI, Francesca. Seven solutions with sign information for sublinear equations with unbounded and indefinite potential and no symmetries. Israel journal of mathematics. 2014, vol. 201, iss. 2, str. 761-796. ISSN 0021-2172. http://dx.doi.org/10.1007/s11856-014-1050-y, DOI: 10.1007/s11856-014-1050-y. [COBISS.SI-ID 18079065]
124. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Sublinear and superlinear Ambrosetti-Prodi problems for the Dirichlet ▫$p$▫-Laplacian. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. Jan. 2014, vol. 95, str. 263-280. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2013.08.026, DOI: 10.1016/j.na.2013.08.026. [COBISS.SI-ID 18285913]
125. MOTREANU, Dumitru, MOTREANU, Viorica Venera, PAPAGEORGIOU, Nikolaos. Topological and variational methods with applications to nonlinear boundary value problems. New York: Springer, cop. 2014. XI, 459 str. ISBN 978-1-4614-9322-8, ISBN 978-1-4614-9323-5. http://dx.doi.org/10.1007/978-1-4614-9323-5. [COBISS.SI-ID 17823577]
126. MUGNAI, Dimitri, PAPAGEORGIOU, Nikolaos. Wang's multiplicity result for superlinear ▫$(p,q)$▫-equations without the Ambrosetti-Rabinowitz condition. Transactions of the American Mathematical Society. 2014, vol. 366, no. 9, str. 4919-4937. ISSN 0002-9947. http://dx.doi.org/10.1090/S0002-9947-2013-06124-7. [COBISS.SI-ID 17802841]


2015

127. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Bifurcation analysis for nonhomogeneous Robin problems with competing nonlinearities. Applied Mathematics Letters. [Print ed.]. 2015, vol. 48, str. 69-74. ISSN 0893-9659. http://dx.doi.org/10.1016/j.aml.2015.03.014. [COBISS.SI-ID 17334361]
128. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Bifurcation near infinity for the Robin ▫$p$▫-Laplacian. Manuscripta mathematica. 2015, vol. 148, iss. 3, str. 415-433. ISSN 0025-2611. http://dx.doi.org/10.1007/s00229-015-0754-6. [COBISS.SI-ID 17493081]
129. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Bifurcation of positive solutions for nonlinear nonhomogeneous Robin and Neumann problems with competing nonlinearities. Discrete and continuous dynamical systems. 2015, vol. 35, no. 10, str. 5003-5036. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2015.35.5003. [COBISS.SI-ID 17311577]
130. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Bifurcation phenomena for parametric nonlinear elliptic hemivariational inequalities. V: HAN, Weimin (ur.). Advances in variational and hemivariational inequalities : theory, numerical analysis, and applications. Cham: Springer, cop. 2015. Str. 3-37. Advances in mechanics and mathematics (Monographic series. Print), 33. ISBN 978-3-319-14489-4, ISBN 978-3-319-14490-0. ISSN 1571-8689. http://dx.doi.org/10.1007/978-3-319-14490-0_1. [COBISS.SI-ID 17587545]
131. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. A bifurcation-type theorem for singular nonlinear elliptic equations. Methods and applications of analysis. 2015, vol. 22, no. 2, str. 147-170. ISSN 1073-2772. http://dx.doi.org/10.4310/MAA.2015.v22.n2.a2, DOI: 10.4310/MAA.2015.v22.n2.a2. [COBISS.SI-ID 18189913]
132. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Combined effects of concave-convex nonlinearities and indefinite potential in some elliptic problems. Asymptotic analysis. 2015, vol. 93, no. 3, str. 259-279. ISSN 0921-7134. http://dx.doi.org/10.3233/ASY-151292. [COBISS.SI-ID 17412441]
133. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. Constant sign and nodal solutions for a class of nonlinear Dirichlet problems. Journal of mathematical analysis and applications. [Print ed.]. 2015, vol. 422, iss. 1, str. 646-666. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2014.08.041, DOI: 10.1016/j.jmaa.2014.08.041. [COBISS.SI-ID 18085209]
134. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Constant sign and nodal solutions for nonlinear elliptic equations with combined nonlinearities. Methods and applications of analysis. 2015, vol. 22, no. 2, str. 221-248. ISSN 1073-2772. http://dx.doi.org/10.4310/MAA.2015.v22.n2.a5, DOI: 10.4310/MAA.2015.v22.n2.a5. [COBISS.SI-ID 18190169]
135. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Dirichlet problems with singular and superlinear terms. Communications in contemporary mathematics. 2015, vol. 17, no. 6, article 1550056 (31 str.). ISSN 0219-1997. http://dx.doi.org/10.1142/S021919971550056X. [COBISS.SI-ID 17737049]
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137. BONANNO, Gabriele, D'AGUÌ, Giuseppina, PAPAGEORGIOU, Nikolaos. Infinitely many solutions for mixed elliptic problems involving the ▫$p$▫-Laplacian. Advanced nonlinear studies. 2015, vol. 15, no. 4, str. 939-950. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2015-0410, DOI: 10.1515/ans-2015-0410. [COBISS.SI-ID 18183769]
138. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiple solutions for asymptotically linear elliptic equations with sign changing weight. Kyoto journal of mathematics. 2015, vol. 55, no. 3, str. 593-605. ISSN 2156-2261. http://dx.doi.org/10.1215/21562261-3089082. [COBISS.SI-ID 17415513]
139. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity of solutions for resonant Neumann problems with an indefinite and unbounded potential. Transactions of the American Mathematical Society. 2015, vol. 367, no. 12, str. 8723-8756. ISSN 0002-9947. http://dx.doi.org/10.1090/S0002-9947-2014-06518-5. [COBISS.SI-ID 17474137]
140. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity theorems for semilinear Robin problems. Advances in calculus of variations. 2015, vol. 8, iss. 3, str. 203-220. ISSN 1864-8258. http://dx.doi.org/10.1515/acv-2013-0026, DOI: 10.1515/acv-2013-0026. [COBISS.SI-ID 17313369]
141. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Neumann problems with indefinite and unbounded potential and concave terms. Proceedings of the American Mathematical Society. 2015, vol. 143, no. 11, str. 4803-4816. ISSN 0002-9939. http://dx.doi.org/10.1090/proc/12600. [COBISS.SI-ID 17440089]
142. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nodal and multiple solutions for nonlinear elliptic equations involving a reaction with zeros. Dynamics of partial differential equations. 2015, vol. 12, no. 1, str. 13-42. ISSN 1548-159X. http://doi.org/10.4310/DPDE.2015.v12.n1.a2, DOI: 10.4310/DPDE.2015.v12.n1.a2. [COBISS.SI-ID 18195545]
143. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nodal solutions for ▫$(p,2)$▫-equations. Transactions of the American Mathematical Society. 2015, vol. 367, no. 10, str. 7343-7372. ISSN 0002-9947. http://dx.doi.org/10.1090/S0002-9947-2014-06324-1, DOI: 10.1090/S0002-9947-2014-06324-1. [COBISS.SI-ID 18185817]
144. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Nonlinear Neumann problems with indefinite potential and concave terms. Communications on pure and applied analysis. Nov. 2015, vol. 14, no. 6, str. 2561-2616. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2015.14.2561, DOI: 10.3934/cpaa.2015.14.2561. [COBISS.SI-ID 18184281]
145. CANDITO, Pasquale, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. Nonlinear nonhomogeneous Neumann eigenvalue problems. Electronic journal of qualitative theory of differential equations. 2015, vol. 2015, no. 46, str. 1-24. ISSN 1417-3875. https://doi.org/10.14232/ejqtde.2015.1.46, DOI: 10.14232/ejqtde.2015.1.46. [COBISS.SI-ID 18195033]
146. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Nonlinear parametric Robin problems with combined nonlinearities. Advanced nonlinear studies. 2015, vol. 15, no. 3, str. 715-748. ISSN 1536-1365. http://www.advancednonlinearstudies.com/ANLS_V15N3art.html. [COBISS.SI-ID 17364313]
147. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear, nonhomogeneous periodic problems with no growth control on the reaction. Journal of dynamical and control systems. 2015, vol. 21, iss. 3, str. 423-441. ISSN 1079-2724. http://dx.doi.org/10.1007/s10883-014-9245-4, DOI: 10.1007/s10883-014-9245-4. [COBISS.SI-ID 18187353]
148. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. On a class of parametric Neumann problems with indefinite and unbounded potential. Forum mathematicum. 2015, vol. 27, iss. 3, str. 1743-1772. ISSN 0933-7741. http://dx.doi.org/10.1515/forum-2012-0042. [COBISS.SI-ID 17813849]
149. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. On a Dirichlet problem with ▫$p$▫-Laplacian and asymmetric nonlinearity. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni. 2015, vol. 26, iss. 1, str. 57-74. ISSN 1120-6330. https://doi.org/10.4171/RLM/692, DOI: 10.4171/RLM/692. [COBISS.SI-ID 18196057]
150. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Parametric ▫$p$▫-Laplacian equations with superlinear reaction. Dynamic systems and applications. 2015, vol. 24, no. 4, str. 523-558. ISSN 1056-2176. [COBISS.SI-ID 17704281]
151. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Periodic problems with a reaction of arbitrary growth. Journal of nonlinear and convex analysis. 2015, vol. 16, no. 6, str. 985-1011. ISSN 1345-4773. http://www.ybook.co.jp/online2/opjnca/vol16/p985.html. [COBISS.SI-ID 18196569]
152. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Positive solutions for nonlinear nonhomogeneous parametric equations. Topological Methods in Nonlinear Analysis. 2015, vol. 46, no. 1, str. 1-15. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2015.033, DOI: 10.12775/TMNA.2015.033. [COBISS.SI-ID 18185561]
153. GASIŃSKI, Leszek, O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear nonhomogeneous Robin problems. Zeitschrift für Analysis und ihre Anwendungen. 2015, vol. 34, iss. 4, str. 435-458. ISSN 0232-2064. http://dx.doi.org/10.4171/ZAA/1548, DOI: 10.4171/ZAA/1548. [COBISS.SI-ID 18194777]
154. HOU, Chunjuan, HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Positive solutions for parametric nonlinear Neumann problems with competing nonlinearities. Houston journal of mathematics. 2015, vol. 41, no. 3, str. 993-1019. ISSN 0362-1588. https://www.math.uh.edu/~hjm/restricted/pdf41(3)/14hu.pdf. [COBISS.SI-ID 18194521]
155. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Positive solutions for parametric nonlinear periodic problems with competing nonlinearities. Electronic journal of differential equations. 2015, vol. 2015, no. 103, str. 1-18. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2015/103/aizicovici.pdf. [COBISS.SI-ID 18077785]
156. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Positive solutions for perturbations of the eigenvalue problem for the Robin ▫$p$▫-Laplacian. Annales Academiae scientiarum Fennicae. Mathematica. 2015, vol. 40, fasc. 1, str. 255-277. ISSN 1239-629X. http://dx.doi.org/10.5186/aasfm.2015.4011. [COBISS.SI-ID 17255513]
157. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Resonant (p, 2)-equations with asymmetric reaction. Analysis and applications. 2015, vol. 13, no. 5, str. 481-506. ISSN 0219-5305. http://dx.doi.org/10.1142/S0219530514500134. [COBISS.SI-ID 17399641]
158. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Resonant ▫$(p, 2)$▫-equations with concave terms. Applicable analysis. 2015, vol. 94, no. 2, str. 341-359. ISSN 0003-6811. http://dx.doi.org/10.1080/00036811.2014.895332, DOI: 10.1080/00036811.2014.895332. [COBISS.SI-ID 18193497]
159. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Resonant equations with the Neumann ▫$p$▫-Laplacian plus an indefinite potential. Journal of mathematical analysis and applications. [Print ed.]. 2015, vol. 422, iss. 2, str. 1146-1179. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2014.09.026, DOI: 10.1016/j.jmaa.2014.09.026. [COBISS.SI-ID 18193241]
160. BARLETTA, Giuseppina, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. Resonant Neumann equations with indefinite linear part. Topological Methods in Nonlinear Analysis. 2015, vol. 45, no. 2, str. 469-491. ISSN 1230-3429. https://www.tmna.ncu.pl/static/archives/vol-45-2.html. [COBISS.SI-ID 17614937]
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162. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Solutions with sign information for nonlinear nonhomogeneous elliptic equations. Topological Methods in Nonlinear Analysis. 2015, vol. 45, no. 2, str. 575-600. ISSN 1230-3429. https://www.tmna.ncu.pl/static/archives/vol-45-2.html. [COBISS.SI-ID 17414745]
163. GASIŃSKI, Leszek, O'REGAN, Donal, PAPAGEORGIOU, Nikolaos. A variational approach to nonlinear logistic equations. Communications in contemporary mathematics. 2015, vol. 17, iss. 3, art. 1450021 37 str.). ISSN 0219-1997. http://dx.doi.org/10.1142/S0219199714500217. [COBISS.SI-ID 17812313]


2016

164. BARLETTA, Giuseppina, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. Bifurcation phenomena for the positive solutions of semilinear elliptic problems with mixed boundary conditions. Journal of nonlinear and convex analysis. 2016, vol. 17, no. 8, str. 1497-1516. ISSN 1345-4773. http://www.ybook.co.jp/online2/opjnca/vol17/p1497.html. [COBISS.SI-ID 17792345]
165. FRAGNELLI, Genni, PAPAGEORGIOU, Nikolaos, MUGNAI, Dimitri. The Brezis-Oswald result for quasilinear Robin problems. Advanced nonlinear studies. 2016, vol. 16, no. 3, str. 603-622. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2016-0010. [COBISS.SI-ID 17736537]
166. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Coercive and noncoercive nonlinear Neumann problems with indefinite potential. Forum mathematicum. 2016, vol. 28, iss. 3, str. 545-571. ISSN 0933-7741. http://dx.doi.org/10.1515/forum-2014-0094, DOI: 10.1515/forum-2014-0094. [COBISS.SI-ID 17566297]
167. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Exercises in analysis. Part 2, Nonlinear analysis. Cham: Springer, cop. 2016. VIII, 1264 str. Problem Books in Mathematics. ISBN 978-3-319-27815-5, ISBN 978-3-319-27817-9. ISSN 0941-3502. http://dx.doi.org/10.1007/978-3-319-27817-9. [COBISS.SI-ID 17676121]
168. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Infinitely many nodal solutions for nonlinear nonhomogeneous Robin problems. Advanced nonlinear studies. 2016, vol. 16, no. 2, str. 287-299. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2015-5040. [COBISS.SI-ID 17729881]
169. MARANO, Salvatore Angelo, MOSCONI, Sunra J. N., PAPAGEORGIOU, Nikolaos. Multiple solutions to ▫$(p,q)$▫-Laplacian problems with resonant concave nonlinearity. Advanced nonlinear studies. 2016, vol. 16, iss. 1, str. 51-65. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2015-5011. [COBISS.SI-ID 17706841]
170. D'AGUÌ, Giuseppina, MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Multiple solutions to a Robin problem with indefinite weight and asymmetric reaction. Journal of mathematical analysis and applications. [Print ed.]. 2016, vol. 433, iss. 2, str. 1821-1845. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2015.08.065. [COBISS.SI-ID 17588057]
171. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity theorems for resonant and superlinear nonhomogeneous elliptic equations. Topological Methods in Nonlinear Analysis. 2016, vol. 48, no. 1, str. 283-320. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.048, DOI: 10.12775/TMNA.2016.048. [COBISS.SI-ID 17791577]
172. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear elliptic equations with a jumping reaction. Journal of mathematical analysis and applications. [Print ed.]. 2016, vol. 443, iss. 2, str. 1033-1070. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2016.05.053. [COBISS.SI-ID 17733209]
173. CANDITO, Pasquale, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. Nonlinear elliptic equations with asymmetric asymptotic behavior at ▫$\pm \infty$▫. Nonlinear analysis: real world applications. 2016, vol. 32, str. 159-177. ISSN 1468-1218. http://dx.doi.org/10.1016/j.nonrwa.2016.04.005. [COBISS.SI-ID 17676889]
174. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Nonlinear elliptic equations with singular reaction. Osaka Journal of Mathematics. 2016, vol. 53, no. 2, str. 489-514. ISSN 0030-6126. http://projecteuclid.org/euclid.ojm/1461781799. [COBISS.SI-ID 17704793]
175. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Nonlinear elliptic problems with superlinear reaction and parametric concave boundary condition. Israel journal of mathematics. 2016, vol. 212, iss. 2, str. 791-824. ISSN 0021-2172. http://dx.doi.org/10.1007/s11856-016-1309-6. [COBISS.SI-ID 17705049]
176. GASIŃSKI, Leszek, KLIMCZAK, Liliana, PAPAGEORGIOU, Nikolaos. Nonlinear noncoercive Neumann problems. Communications on pure and applied analysis. 2016, vol. 15, no. 4, str. 1107-1123. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2016.15.1107. [COBISS.SI-ID 17749337]
177. CANDITO, Pasquale, D'AGUÌ, Giuseppina, PAPAGEORGIOU, Nikolaos. Nonlinear noncoercive Neumann problems with a reaction concave near the origin. Topological Methods in Nonlinear Analysis. 2016, vol. 47, no. 1, str. 289--317. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.007, DOI: 10.12775/TMNA.2016.007. [COBISS.SI-ID 17629785]
178. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Nonlinear nonhomogeneous Dirichlet equations involving a superlinear nonlinearity. Results in mathematics. 2016, vol. 70, iss. 1, str. 31-79. ISSN 1422-6383. http://dx.doi.org/10.1007/s00025-015-0461-3. [COBISS.SI-ID 17824089]
179. BARLETTA, Giuseppina, D'AGUÌ, Giuseppina, PAPAGEORGIOU, Nikolaos. Nonlinear nonhomogeneous periodic problems. NoDEA. [Print ed.]. 2016, vol. 23, iss. 2, art. 18 (23 str.). ISSN 1021-9722. http://dx.doi.org/10.1007/s00030-016-0356-3, DOI: 10.1007/s00030-016-0356-3. [COBISS.SI-ID 17652569]
180. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Nonlinear nonhomogeneous Robin problems with superlinear reaction term. Advanced nonlinear studies. 2016, vol. 16, no. 4, str. 737-764. ISSN 1536-1365. http://dx.doi.org/10.1515/ans-2016-0023. [COBISS.SI-ID 17819481]
181. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Nonlinear Robin problems with a reaction of arbitrary growth. Annali di matematica pura ed applicata. 2016, vol. 195, iss. 4, str. 1207-1235. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-015-0512-0. [COBISS.SI-ID 17803097]
182. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nonlinear, nonhomogeneous parametric Neumann problems. Topological Methods in Nonlinear Analysis. 2016, vol. 48, no. 1, str. 45-69. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.035. [COBISS.SI-ID 17954905]
183. PAPAGEORGIOU, Nikolaos, ANDRADE SANTOS, Sandrina Rafaela, STAICU, Vasile. On ▫$(p, q)$▫ - equations with concave terms. Advances in mathematical sciences and applications. 2016, vol. 25, no. 1, str. 1-32. ISSN 1343-4373. [COBISS.SI-ID 18082393]
184. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. On a Robin problem with indefinite weight and asymmetric reaction superlinear at ▫$+\infty$▫. Journal of mathematical analysis and applications. [Print ed.]. 2016, vol. 443, iss. 1, str. 123-145. ISSN 0022-247X. http://dx.doi.org/10.1016/j.jmaa.2016.05.017, DOI: 10.1016/j.jmaa.2016.05.017. [COBISS.SI-ID 17682265]
185. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. On a Robin problem with ▫$p$▫-Laplacian and reaction bounded only from above. Monatshefte für Mathematik. [Print ed.]. 2016, vol. 180, iss. 2, str. 317-336. ISSN 0026-9255. http://dx.doi.org/10.1007/s00605-015-0796-6. [COBISS.SI-ID 17706585]
186. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. On noncoercive elliptic problems. NoDEA. [Print ed.]. 2016, vol. 23, iss. 4, art. 42 (17 str.). ISSN 1021-9722. http://dx.doi.org/10.1007/s00030-016-0394-x. [COBISS.SI-ID 17730649]
187. BARLETTA, Giuseppina, D'AGUÌ, Giuseppina, PAPAGEORGIOU, Nikolaos. On resonant ▫$(p,2)$▫-equations. Minimax theory and its applications. 2016, vol. 1, no. 1, str. 83-109. ISSN 2199-1413. http://www.heldermann.de/MTA/MTA01/MTA011/mta01006.htm. [COBISS.SI-ID 18196313]
188. FRAGNELLI, Genni, PAPAGEORGIOU, Nikolaos, MUGNAI, Dimitri. Positive and nodal solutions for parametric nonlinear Robin problems with indefinite potential. Discrete and continuous dynamical systems. 2016, vol. 36, no. 11, str. 6133-6166. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2016068. [COBISS.SI-ID 17803353]
189. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Positive solutions for nonlinear nonhomogeneous Dirichlet problems with concave-convex nonlinearities. Positivity. 2016, vol. 20, iss. 4, str. 945-979. ISSN 1385-1292. http://dx.doi.org/10.1007/s11117-015-0395-8, DOI: 10.1007/s11117-015-0395-8. [COBISS.SI-ID 17586777]
190. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Positive solutions for parametric Dirichlet problems with indefinite potential and superdiffusive reaction. Topological Methods in Nonlinear Analysis. 2016, vol. 47, no. 2, str. 423-438. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.014, DOI: 10.12775/TMNA.2016.014. [COBISS.SI-ID 17675353]
191. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Positive solutions for parametric ▫$p$▫-Laplacian equations. Communications on pure and applied analysis. 2016, vol. 15, no. 5, str. 1545-1570. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2016002. [COBISS.SI-ID 17801817]
192. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Positive solutions for Robin problems with general potential and logistic reaction. Communications on pure and applied analysis. 2016, vol. 15, no. 6, str. 2489-2507. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2016046. [COBISS.SI-ID 17807193]
193. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for the generalized nonlinear logistic equations. Canadian mathematical bulletin. 2016, vol. 59, no. 1, str. 73-86. ISSN 0008-4395. http://dx.doi.org/10.4153/CMB-2015-064-8. [COBISS.SI-ID 17647193]
194. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Positive solutions of nonlinear Robin eigenvalue problems. Proceedings of the American Mathematical Society. 2016, vol. 144, no. 11, str. 4913-4928. ISSN 0002-9939. http://doi.org/10.1090/proc/13107, DOI: 10.1090/proc/13107. [COBISS.SI-ID 17790809]
195. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Robin problems with indefinite, unbounded potential and reaction of arbitrary growth. Revista matemática complutense. 2016, vol. 29, iss. 1, str. 91-126. ISSN 1139-1138. http://dx.doi.org/10.1007/s13163-015-0181-y. [COBISS.SI-ID 17559641]
196. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Semilinear Neumann equations with indefinite and unbounded potential. Houston journal of mathematics. 2016, vol. 42, no. 1, str. 307-340. ISSN 0362-1588. https://www.math.uh.edu/~hjm/restricted/pdf42(1)/15aizicovici.pdf. [COBISS.SI-ID 17748825]


2017

197. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Asymmetric ▫$(p, 2)$▫-equations with double resonance. Calculus of variations and partial differential equations. 2017, vol. 56, iss. 3, art. 88 (23 str.). ISSN 0944-2669. http://dx.doi.org/10.1007/s00526-017-1180-2, DOI: 10.1007/s00526-017-1180-2. [COBISS.SI-ID 18055001]
198. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Asymmetric ▫$(p,2)$▫-equations, superlinear at ▫$+\infty$▫ resonant at ▫$-\infty$▫. Bulletin des sciences mathématiques. [Print ed.]. 2017, vol. 141, iss. 5, str. 443-488. ISSN 0007-4497. http://dx.doi.org/10.1016/j.bulsci.2017.05.003, DOI: 10.1016/j.bulsci.2017.05.003. [COBISS.SI-ID 18065241]
199. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Asymmetric, noncoercive, superlinear ▫$(p,2)$▫-equations. Journal of convex analysis. 2017, vol. 24, no. 3, str. 769-793. ISSN 0944-6532. http://www.heldermann.de/JCA/JCA24/JCA243/jca24047.htm. [COBISS.SI-ID 18096729]
200. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Elliptic equations with indefinite and unbounded potential and a nonlinear concave boundary condition. Communications in contemporary mathematics. 2017, vol. 19, iss. 1, art. 1550090 (34 str.). ISSN 0219-1997. http://dx.doi.org/10.1142/S021919971550090X. [COBISS.SI-ID 17842265]
201. PAPAGEORGIOU, Nikolaos, PAPALINI, Francesca. Existence, nonexistence and multiplicity of positive solutions for nonlinear, nonhomogeneous Neumann problems. Manuscripta mathematica. Sep. 2017, vol. 154, iss. 1-2, str. 257-274. ISSN 0025-2611. http://dx.doi.org/10.1007/s00229-017-0919-6, DOI: 10.1007/s00229-017-0919-6. [COBISS.SI-ID 17993817]
202. BONANNO, Gabriele, CANDITO, Pasquale, LIVREA, Roberto, PAPAGEORGIOU, Nikolaos. Existence, nonexistence and uniqueness of positive solutions for nonlinear eigenvalue problems. Communications on pure and applied analysis. 2017, vol. 16, no. 4, str. 1169 - 1188. ISSN 1534-0392. http://aimsciences.org/journals/doIpChk.jsp?paperID=13951&mode=full, http://doi.org/10.3934/cpaa.2017057. [COBISS.SI-ID 18012761]
203. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Infinitely many nodal solutions for semilinear Robin problems with an indefinite linear part. Applied Mathematics Letters. [Print ed.]. 2017, vol. 64, str. 42-50. ISSN 0893-9659. http://dx.doi.org/10.1016/j.aml.2016.08.011. [COBISS.SI-ID 17822809]
204. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. An infinity of nodal solutions for superlinear Robin problems with an indefinite and unbounded potential. Bulletin des sciences mathématiques. [Print ed.]. 2017, vol. 141, iss. 4, str. 251-266. ISSN 0007-4497. http://dx.doi.org/10.1016/j.bulsci.2017.03.001, DOI: 10.1016/j.bulsci.2017.03.001. [COBISS.SI-ID 18065497]
205. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple nodal solutions for semilinear Robin problems with indefinite linear part and concave terms. Topological Methods in Nonlinear Analysis. Sep. 2017, vol. 50, no. 1, str. 269-286. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2017.029, DOI: 10.12775/TMNA.2017.029. [COBISS.SI-ID 18103897]
206. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions for ▫$(p,2)$▫-equations with resonance and concave terms. Results in mathematics. June 2019, vol. 74, iss. 2, str. 1-34. ISSN 1422-6383. https://doi.org/10.1007/s00025-019-0996-9, DOI: 10.1007/s00025-019-0996-9. [COBISS.SI-ID 18598745]
207. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Multiple solutions for resonant problems of the Robin ▫$p$▫-Laplacian plus an indefinite potential. Calculus of variations and partial differential equations. June 2017, vol. 56, iss. 3, art. 63 [23 str.]. ISSN 0944-2669. http://dx.doi.org/10.1007/s00526-017-1164-2, Repozitorij Univerze v Ljubljani – RUL. [COBISS.SI-ID 18019929]
208. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiplicity theorems for ▫$(p,2)$▫-equations. Journal of nonlinear and convex analysis. 2017, vol. 18, iss. 7, str. 1297-1323. ISSN 1345-4773. http://www.ybook.co.jp/online2/opjnca/vol18/p1297.html. [COBISS.SI-ID 18195801]
209. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity theorems for nonlinear nonhomogeneous Robin problems. Revista matemática iberoamericana. 2017, vol. 33, iss. 1, str. 251-289. ISSN 0213-2230. http://dx.doi.org/10.4171/RMI/936. [COBISS.SI-ID 17969241]
210. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Noncoercive resonant ▫$(p,2)$▫-equations. Applied mathematics and optimization. Dec. 2017, vol. 76, iss. 3, str. 621-639. ISSN 0095-4616. http://dx.doi.org/10.1007/s00245-016-9363-3, DOI: 10.1007/s00245-016-9363-3. [COBISS.SI-ID 17803865]
211. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonhomogeneous hemivariational inequalities with indefinite potential and Robin boundary condition. Journal of optimization theory and applications. Nov. 2017, vol. 175, iss. 2, str. 293-323. ISSN 0022-3239. http://doi.org/10.1007/s10957-017-1173-5, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s10957-017-1173-5. [COBISS.SI-ID 18130265]
212. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nonlinear Dirichlet problems with double resonance. Communications on pure and applied analysis. 2017, vol. 16, no. 4, str. 1147-1168. ISSN 1534-0392. http://aimsciences.org/journals/doIpChk.jsp?paperID=13910&mode=full, http://doi.org/10.3934/cpaa.2017056, DOI: 10.3934/cpaa.2017056. [COBISS.SI-ID 18011481]
213. GASIŃSKI, Leszek, KLIMCZAK, Liliana, PAPAGEORGIOU, Nikolaos. Nonlinear Dirichlet problems with no growth restriction on the reaction. Zeitschrift für Analysis und ihre Anwendungen. 2017, vol. 36, iss. 2, str. 209-238. ISSN 0232-2064. http://dx.doi.org/10.4171/ZAA/1586, DOI: 10.4171/ZAA/1586. [COBISS.SI-ID 18041945]
214. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. On a class of parametric ▫$(p, 2)$▫-equations. Applied mathematics and optimization. Apr. 2017, vol. 75, iss. 2, str. 193-228. ISSN 0095-4616. http://dx.doi.org/10.1007/s00245-016-9330-z, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00245-016-9330-z. [COBISS.SI-ID 17592153]
215. PAPAGEORGIOU, Nikolaos, PAPALINI, Francesca. On p-logistic equations of equidiffusive type. Positivity. 2017, vol. 21, iss. 1, str. 9-21. ISSN 1385-1292. http://dx.doi.org/10.1007/s11117-016-0398-0, DOI: 10.1007/s11117-016-0398-0. [COBISS.SI-ID 17634649]
216. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Pairs of positive solutions for resonant singular equations with the ▫$p$▫-Laplacian. Electronic journal of differential equations. 2017, vol. 2017, no. 249, str. 1-13. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2017/249/papageorgiou.pdf, Repozitorij Univerze v Ljubljani – RUL. [COBISS.SI-ID 18154073]
217. EL MANOUNI, Said, PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Parametric nonlinear nonhomogeneous Neumann equations involving a nonhomogeneous differential operator. Monatshefte für Mathematik. [Print ed.]. 2017, vol. 177, iss. 2, str. 203-233. ISSN 0026-9255. http://dx.doi.org/10.1007/s00605-014-0649-8, DOI: 10.1007/s00605-014-0649-8. [COBISS.SI-ID 18076761]
218. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Periodic solutions for time-dependent subdifferential evolution inclusions. Evolution equations and control theory. 2017, vol. 6, iss. 2, str. 277-297. ISSN 2163-2480. http://dx.doi.org/10.3934/eect.2017015, DOI: 10.3934/eect.2017015. [COBISS.SI-ID 18075737]
219. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear elliptic problems with dependence on the gradient. Journal of differential equations. 2017, vol. 263, iss. 2, str. 1451-1476. ISSN 0022-0396. http://dx.doi.org/10.1016/j.jde.2017.03.021, DOI: 10.1016/j.jde.2017.03.021. [COBISS.SI-ID 18081625]
220. AVERNA, Diego, PAPAGEORGIOU, Nikolaos, TORNATORE, Elisabetta. Positive solutions for nonlinear Robin problems. Electronic journal of differential equations. 2017, vol. 2017, no. 204, str. 1-25. ISSN 1072-6691. http://ejde.math.txstate.edu/Volumes/2017/204/averna.pdf. [COBISS.SI-ID 18130521]
221. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Positive solutions for parametric semilinear Robin problems with indefinite and unbounded potential. Mathematica Scandinavica. 2017, vol. 121, no. 2, str. 263-292. ISSN 0025-5521. http://doi.org/10.7146/math.scand.a-96696, DOI: 10.7146/math.scand.a-96696. [COBISS.SI-ID 18163033]
222. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for perturbations of the Robin eigenvalue problem plus an indefinite potential. Discrete and continuous dynamical systems. 2017, vol. 37, no. 5, str. 2589-2618. ISSN 1078-0947. http://dx.doi.org/10.3934/dcds.2017111, Repozitorij Univerze v Ljubljani – RUL. [COBISS.SI-ID 17925721]
223. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for the Neumann ▫$p$▫-Laplacian with superdiffusive reaction. Bulletin of the Malaysian Mathematical Sciences Society. Oct. 2017, vol. 40, iss. 4, str. 1711-1731. ISSN 0126-6705. http://doi.org/10.1007/s40840-015-0212-3, DOI: 10.1007/s40840-015-0212-3. [COBISS.SI-ID 18077017]
224. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive, extremal and nodal solutions for nonlinear parametric problems. Journal of convex analysis. 2017, vol. 24, no. 1, str. 261-285. ISSN 0944-6532. http://www.heldermann.de/JCA/JCA24/JCA241/jca24018.htm. [COBISS.SI-ID 18004569]
225. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Resonant Robin problems with indefinite and unbounded potential. Topological Methods in Nonlinear Analysis. 2017, vol. 49, no. 1, str. 51-74. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.062, DOI: 10.12775/TMNA.2016.062. [COBISS.SI-ID 17803609]
226. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Resonant semilinear Robin problems with a general potential. Electronic journal of qualitative theory of differential equations. 2017, vol. 2017, no. 70, str. 1-15. ISSN 1417-3875. https://doi.org/10.14232/ejqtde.2017.1.70, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.14232/ejqtde.2017.1.70. [COBISS.SI-ID 18157657]
227. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Robin problems near resonance at any nonprincipal eigenvalue. Results in mathematics. 2017, vol. 71, iss. 3, str. 1389-1412. ISSN 1422-6383. http://dx.doi.org/10.1007/s00025-016-0602-3, DOI: 10.1007/s00025-016-0602-3. [COBISS.SI-ID 17804121]
228. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Robin problems with a general potential and a superlinear reaction. Journal of differential equations. 2017, vol. 263, iss. 6, str. 3244-3290. ISSN 0022-0396. http://dx.doi.org/10.1016/j.jde.2017.04.032, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.jde.2017.04.032. [COBISS.SI-ID 18034521]
229. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Robin problems with general potential and double resonance. Applied Mathematics Letters. [Print ed.]. 2017, vol. 68, str. 122-128. ISSN 0893-9659. http://dx.doi.org/10.1016/j.aml.2017.01.003. [COBISS.SI-ID 17994585]
230. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Robin problems with indefinite and unbounded potential, resonant at ▫$-\infty$▫, superlinear at ▫$+\infty$▫. Tohoku mathematical journal. 2017, vol. 69, no. 2, str. 261-286. ISSN 0040-8735. http://projecteuclid.org/euclid.tmj/1498269626, DOI: 10.2748/tmj/1498269626. [COBISS.SI-ID 18080089]
231. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Robin problems with indefinite linear part and competition phenomena. Communications on pure and applied analysis. 2017, vol. 16, no. 4, str. 1293-1314. ISSN 1534-0392. http://aimsciences.org/journals/doIpChk.jsp?paperID=13917&mode=full, http://doi.org/10.3934/cpaa.2017063, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.3934/cpaa.2017063. [COBISS.SI-ID 18010713]
232. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Sensitivity analysis for optimal control problems governed by nonlinear evolution inclusions. Advances in nonlinear analysis. [Print ed.]. 2017, vol. 6, iss. 2, str. 199-235. ISSN 2191-9496. http://dx.doi.org/10.1515/anona-2016-0096, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/anona-2016-0096. [COBISS.SI-ID 17696089]
233. PAPAGEORGIOU, Nikolaos, SMYRLIS, George. Strongly resonant Robin problems with indefinite and unbounded potential. Topological Methods in Nonlinear Analysis. Jun. 2017, vol. 49, no. 2, str. 511-527. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2016.085, DOI: 10.12775/TMNA.2016.085. [COBISS.SI-ID 17994329]
234. FRAGNELLI, Genni, MUGNAI, Dimitri, PAPAGEORGIOU, Nikolaos. Superlinear Neumann problems with the ▫$p$▫-Laplacian plus an indefinite potential. Annali di matematica pura ed applicata. 2017, vol. 196, iss. 2, str. 479-517. ISSN 0373-3114. http://dx.doi.org/10.1007/s10231-016-0582-7. [COBISS.SI-ID 17991257]
235. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Superlinear, noncoercive asymmetric Robin problems with indefinite, unbounded potential. Zeitschrift für Analysis und ihre Anwendungen. 2017, vol. 36, str. 253-281. ISSN 0232-2064. http://dx.doi.org/10.4171/ZAA/1588, DOI: 10.4171/ZAA/1588. [COBISS.SI-ID 18096473]


2018

236. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. ▫$(p,2)$▫-equations asymmetric at both zero and infinity. Advances in nonlinear analysis. [Print ed.]. 2018, vol. 7, iss. 3, str. 327-351. ISSN 2191-9496. http://dx.doi.org/10.1515/anona-2017-0195, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/anona-2017-0195. [COBISS.SI-ID 18174297]
237. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Anti-periodic solutions for nonlinear evolution inclusions. Journal of evolution equations. June 2018, vol. 18, iss. 2, str. 1025-1047. ISSN 1424-3199. https://doi.org/10.1007/s00028-018-0431-9, DOI: 10.1007/s00028-018-0431-9. [COBISS.SI-ID 18274649]
238. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Applied nonlinear functional analysis : an introduction. Berlin: De Gruyter, cop. 2018. X, 612 str. ISBN 978-3-11-051622-7, ISBN 978-3-11-053298-2, ISBN 978-3-11-053183-1. https://www.degruyter.com/viewbooktoc/product/484686. [COBISS.SI-ID 18413657]
239. MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Asymmetric Robin boundary-value problems with ▫$p$▫-Laplacian and indefinite potential. Electronic journal of differential equations. 2018, vol. 2018, art. no. 127, str. 1-21. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2018/127/marano.pdf. [COBISS.SI-ID 18390105]
240. IANNIZZOTTO, Antonio, MARRAS, Monica, PAPAGEORGIOU, Nikolaos. Constant sign and nodal solutions for nonhomogeneous Robin boundary value problems with asymmetric reactions. Electronic journal of qualitative theory of differential equations. 2018, vol. 2018, no. 71, str. 1-28. ISSN 1417-3875. https://doi.org/10.14232/ejqtde.2018.1.71, DOI: 10.14232/ejqtde.2018.1.71. [COBISS.SI-ID 18439513]
241. PAPAGEORGIOU, Nikolaos, Recent Advances in Nonlinear Analysis, On the occasion of Vicentiu Radulescu 60th anniversary, Levico Terme (Trento), Italy, May 28 - 30, 2018. Dirichlet ▫$(p, 2)$▫-equations. [COBISS.SI-ID 18372185]
242. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Double resonance for Robin problems with indefinite and unbounded potential. Discrete and continuous dynamical systems. Series S. Apr. 2018, vol. 11, iss. 2, str. 323-344. ISSN 1937-1632. http://dx.doi.org/10.3934/dcdss.2018018, DOI: 10.3934/dcdss.2018018. [COBISS.SI-ID 18160473]
243. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Double-phase problems with reaction of arbitrary growth. Zeitschrift für angewandte Mathematik und Physik. Aug. 2018, vol. 69, iss. 4, art. 108 (21 str.). ISSN 0044-2275. https://doi.org/10.1007/s00033-018-1001-2, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00033-018-1001-2. [COBISS.SI-ID 18409561]
244. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Existence and multiplicity of solutions for resonant ▫$(p,2)$▫-equations. Advanced nonlinear studies. Feb. 2018, vol. 18, iss. 1, str. 105-129. ISSN 1536-1365. https://www.degruyter.com/view/j/ans.ahead-of-print/ans-2017-0009/ans-2017-0009.xml?format=INT, https://doi.org/10.1515/ans-2017-0009, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/ans-2017-0009. [COBISS.SI-ID 18001241]
245. IANNIZZOTTO, Antonio, PAPAGEORGIOU, Nikolaos. Existence and multiplicity results for resonant fractional boundary value problems. Discrete and continuous dynamical systems. Series S. June 2018, vol. 11, iss. 3, str. 511-532. ISSN 1937-1632. http://dx.doi.org/10.3934/dcdss.2018028, DOI: 10.3934/dcdss.2018028. [COBISS.SI-ID 18161753]
246. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Existence of positive solutions for nonlinear Dirichlet problems with gradient dependence and arbitrary growth. Electronic journal of qualitative theory of differential equations. 2018, vol. 2018, no. 18, str. 1-9. ISSN 1417-3875. https://doi.org/10.14232/ejqtde.2018.1.18, DOI: 10.14232/ejqtde.2018.1.18. [COBISS.SI-ID 18362713]
247. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Extremal solutions and strong relaxation for nonlinear multivalued systems with maximal monotone terms. Journal of mathematical analysis and applications. [Print ed.]. May 2018, vol. 461, iss. 1, str. 401-421. ISSN 0022-247X. https://doi.org/10.1016/j.jmaa.2018.01.009, DOI: 10.1016/j.jmaa.2018.01.009. [COBISS.SI-ID 18280793]
248. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Integral representation of random set-valued measures. Stochastic analysis and applications. 2018, vol. 36, iss. 5, str. 883-894. ISSN 0736-2994. https://doi.org/10.1080/07362994.2018.1486204, DOI: 10.1080/07362994.2018.1486204. [COBISS.SI-ID 18515289]
249. AVERNA, Diego, PAPAGEORGIOU, Nikolaos, TORNATORE, Elisabetta. Multiple solutions for nonlinear nonhomogeneous resonant coercive problems. Discrete and continuous dynamical systems. Series S. Apr. 2018, vol. 11, iss. 2, str. 155-178. ISSN 1937-1632. http://dx.doi.org/10.3934/dcdss.2018010, DOI: 10.3934/dcdss.2018010. [COBISS.SI-ID 18161497]
250. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions for strongly resonant Robin problems. Mathematische Nachrichten. May 2018, vol. 291, iss. 7, str. 1147-1167. ISSN 0025-584X. http://dx.doi.org/10.1002/mana.201600454, DOI: 10.1002/mana.201600454. [COBISS.SI-ID 18210137]
251. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Multiplicity of positive solutions for nonlinear singular Neumann problems. Libertas mathematica. 2018, vol. 38, no. 2, str. 15-40. ISSN 0278-5307. http://system.lm-ns.org/index.php/lm-ns/article/view/1382/1372. [COBISS.SI-ID 18636889]
252. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity of solutions for nonlinear nonhomogeneous Robin problems. Proceedings of the American Mathematical Society. Feb. 2018, vol. 146, no. 2, str. 601-611. ISSN 0002-9939. http://dx.doi.org/10.1090/proc/13862, DOI: 10.1090/proc/13862. [COBISS.SI-ID 18116953]
253. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multiplicity of solutions for Robin problems with double resonance. Annali della Scuola normale superiore di Pisa. Classe di scienze. 2018, vol. 18, iss. 1, str. 145-201. ISSN 0391-173X. https://doi.org/10.2422/2036-2145.201605_005, DOI: 10.2422/2036-2145.201605_005. [COBISS.SI-ID 18330969]
254. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Multivalued periodic systems with maximal monotone terms. Pure and applied functional analysis : an international journal. 2018, vol. 3, no. 1, str. 179-192. ISSN 2189-3756. http://www.ybook.co.jp/online2/oppafa/vol3/p179.html. [COBISS.SI-ID 18456153]
255. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nodal solutions for nonlinear non-homogeneous Robin problems with an indefinite potential. Proceedings of the Edinburgh Mathematical Society. Nov. 2018, vol. 61, no. 4, str. 943-959. ISSN 0013-0915. https://doi.org/10.1017/S0013091518000044, DOI: 10.1017/S0013091518000044. [COBISS.SI-ID 18383961]
256. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nodal solutions for nonlinear nonhomogeneous Robin problems. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni. 2018, vol. 29, iss. 4, str. 721-738. ISSN 1120-6330. http://dx.doi.org/10.4171/RLM/831, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.4171/RLM/831. [COBISS.SI-ID 18514777]
257. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nodal solutions for the Robin ▫$p$▫-Laplacian plus an indefinite potential and a general reaction term. Communications on pure and applied analysis. 2018, vol. 17, no. 1, str. 231-241. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2018014, https://www.aimsciences.org/journals/displayArticlesnew.jsp?paperID=14567, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.3934/cpaa.2018014. [COBISS.SI-ID 18124633]
258. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear elliptic inclusions with unilateral constraint and dependence on the gradient. Applied mathematics and optimization. Aug. 2018, vol. 78, iss. 1, str. 1-23. ISSN 0095-4616. http://dx.doi.org/10.1007/s00245-016-9392-y, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00245-016-9392-y. [COBISS.SI-ID 17801305]
259. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Nonlinear multivalued Duffing systems. Journal of mathematical analysis and applications. [Print ed.]. Dec. 2018, vol. 468, iss. 1, str. 376-390. ISSN 0022-247X. https://doi.org/10.1016/j.jmaa.2018.08.024, DOI: 10.1016/j.jmaa.2018.08.024. [COBISS.SI-ID 18415449]
260. BAI, Yunru, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear nonhomogeneous Robin problems with dependence on the gradient. Boundary value problems. 2018, vol. 2018, art. 17, str. 1-24. ISSN 1687-2770. https://doi.org/10.1186/s13661-018-0936-8, DOI: 10.1186/s13661-018-0936-8. [COBISS.SI-ID 18240345]
261. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Nonlinear Robin problems with unilateral constraints and dependence on the gradient. Electronic journal of differential equations. 2018, vol. 2018, art. no. 182, str. 1-14. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2018/182/papageorgiou.pdf. [COBISS.SI-ID 18543961]
262. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear second order evolution inclusions with noncoercive viscosity term. Journal of differential equations. April 2018, vol. 264, iss. 7, str. 4749-4763. ISSN 0022-0396. http://doi.org/10.1016/j.jde.2017.12.022, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.jde.2017.12.022. [COBISS.SI-ID 18207321]
263. MARANO, Salvatore Angelo, MOSCONI, Sunra J. N., PAPAGEORGIOU, Nikolaos. On a ▫$(p,q)$▫-Laplacian problem with parametric concave term and asymmetric perturbation. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni. 2018, vol. 29, iss. 1, str. 109-125. ISSN 1120-6330. http://dx.doi.org/10.4171/RLM/796, DOI: 10.4171/RLM/796. [COBISS.SI-ID 18395737]
264. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Periodic solutions for a class of evolution inclusions. Computers & mathematics with applications. [Print ed.]. April 2018, vol. 75, iss. 8, str. 3047-3065. ISSN 0898-1221. https://doi.org/10.1016/j.camwa.2018.01.031, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.camwa.2018.01.031. [COBISS.SI-ID 18271321]
265. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Periodic solutions for nonlinear nonmonotone evolution inclusions. Discrete and continuous dynamical systems. Series B. 2018, vol. 23, iss. 1, str. 219-238. ISSN 1531-3492. http://dx.doi.org/10.3934/dcdsb.2018015, DOI: 10.3934/dcdsb.2018015. [COBISS.SI-ID 18163801]
266. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for nonlinear nonhomogeneous parametric Robin problems. Forum mathematicum. May 2018, vol. 30, iss. 3, str. 553-580. ISSN 0933-7741. http://doi.org/10.1515/forum-2017-0124, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/forum-2017-0124. [COBISS.SI-ID 18103641]
267. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for nonvariational Robin problems. Asymptotic analysis. 2018, vol. 108, no. 4, str. 243-255. ISSN 0921-7134. http://dx.doi.org/10.3233/ASY-181464, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.3233/ASY-181464. [COBISS.SI-ID 18396249]
268. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Positive solutions for parametric nonlinear nonhomogeneous Robin problems. Funkcialaj Ekvacioj. 2018, vol. 61, iss. 3, str. 285-313. ISSN 0532-8721. https://doi.org/10.1619/fesi.61.285, DOI: 10.1619/fesi.61.285. [COBISS.SI-ID 18592601]
269. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Positive solutions for resonant ▫$(p, q)$▫-equations with concave terms. Communications on pure and applied analysis. 2018, vol. 17, no. 6, str. 2639-2656. ISSN 1534-0392. http://dx.doi.org/10.3934/cpaa.2018125, DOI: 10.3934/cpaa.2018125. [COBISS.SI-ID 18379353]
270. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for superdiffusive mixed problems. Applied Mathematics Letters. [Print ed.]. Mar. 2018, vol. 77, str. 87-93. ISSN 0893-9659. https://doi.org/10.1016/j.aml.2017.09.017, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.aml.2017.09.017. [COBISS.SI-ID 18153561]
271. AVERNA, Diego, PAPAGEORGIOU, Nikolaos, TORNATORE, Elisabetta. Positive solutions for the Neumann p-Laplacian. Monatshefte für Mathematik. [Print ed.]. April 2018, vol. 185, iss. 4, str. 557-573. ISSN 0026-9255. http://dx.doi.org/10.1007/s00605-017-1027-0, DOI: 10.1007/s00605-017-1027-0. [COBISS.SI-ID 17976409]
272. FILIPPAKIS, Michael E., PAPAGEORGIOU, Nikolaos. Resonant ▫$(p,q)$▫-equations with Robin boundary condition. Electronic journal of differential equations. 2018, vol. 2018, art. no. 1, str. 1-24. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2018/01/filippakis.pdf. [COBISS.SI-ID 18221657]
273. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Resonant Robin problems driven by the ▫$p$▫-Laplacian plus an indefinite potential. Annales Academiae scientiarum Fennicae. Mathematica. 2018, vol. 43, fasc. 1, str. 483-508. ISSN 1239-629X. https://doi.org/10.5186/aasfm.2018.4331, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.5186/aasfm.2018.4331. [COBISS.SI-ID 18238809]
274. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Resonant Robin problems with indefinite and unbounded potential. Mathematische Nachrichten. April 2018, vol. 291, iss. 5-6, str. 848-878. ISSN 0025-584X. http://dx.doi.org/10.1002/mana.201600174, DOI: 10.1002/mana.201600174. [COBISS.SI-ID 18193753]
275. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Semilinear Robin problems resonant at both zero and infinity. Forum mathematicum. Jan. 2018, vol. 30, iss. 1, str. 237-251. ISSN 0933-7741. http://doi.org/10.1515/forum-2016-0264, DOI: 10.1515/forum-2016-0264. [COBISS.SI-ID 18080601]
276. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Sensitivity analysis of parametric elliptic optimal control problems. Pure and applied functional analysis : an international journal. 2018, vol. 3, no. 1, str. 27-42. ISSN 2189-3756. http://www.ybook.co.jp/online2/oppafa/vol3/p27.html. [COBISS.SI-ID 18488153]
277. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Solutions with sign information for nonlinear nonhomogeneous problems. Mathematische Nachrichten. Apr. 2019, vol. 292, iss. 4, str. 871-891. ISSN 0025-584X. https://doi.org/10.1002/mana.201800083, DOI: 10.1002/mana.201800083. [COBISS.SI-ID 18495577]
278. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Strongly nonlinear second order multivalued Dirichlet systems. Journal of nonlinear and variational analysis. Apr. 2018, vol. 2, iss. 1, str. 3-23. ISSN 2560-6778. https://doi.org/10.23952/jnva.2.2018.1.02, DOI: 10.23952/jnva.2.2018.1.02. [COBISS.SI-ID 18657881]
279. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Superlinear Robin problems with indefinite linear part. Science, Technology and Innovation. 2018, vol. 2, no. 1, str. 74-94. ISSN 2544-9125. https://doi.org/10.5604/01.3001.0012.0898, DOI: 10.5604/01.3001.0012.0898. [COBISS.SI-ID 18412889]


2019

280. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Advances in nonlinear differential problems with parametric reaction. V: SIMOS, Theodore (ur.), TSITOURAS, Charalambos (ur.). International Conference of Numerical Analysis and Applied Mathematics (ICNAAM 2018) : Rhodes, Greece, 13-18 September 2018. Melville (N.Y.): AIP Publishing, cop. 2019. Art. 280006 (4 str.). AIP conference proceedings, 2116. ISBN 978-0-7354-1854-7. ISSN 1551-7616. https://doi.org/10.1063/1.5114289, DOI: 10.1063/1.5114289. [COBISS.SI-ID 18840153]
281. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Asymmetric Robin problems with indefinite potential and concave terms. Advanced nonlinear studies. Feb. 2019, vol. 19, iss. 1, str. 69-87. ISSN 1536-1365. https://doi.org/10.1515/ans-2018-2022, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/ans-2018-2022. [COBISS.SI-ID 18385753]
282. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Convergence theorems for adapted sequences of random sets. Stochastic analysis and applications. 2019, vol. 37, iss. 2, str. 189-218. ISSN 0736-2994. https://doi.org/10.1080/07362994.2018.1548971, DOI: 10.1080/07362994.2018.1548971. [COBISS.SI-ID 18515801]
283. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Double-phase problems and a discontinuity property of the spectrum. Proceedings of the American Mathematical Society. Jul. 2019, vol. 147, no. 7, str. 2899-2910. ISSN 0002-9939. https://doi.org/10.1090/proc/14466, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1090/proc/14466. [COBISS.SI-ID 18602073]
284. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Existence of positive solutions for nonlinear Robin problems with gradient dependence. Annales Academiae scientiarum Fennicae. Mathematica. 2019, vol. 44, fasc. 2, str. 739-753. ISSN 1239-629X. https://doi.org/10.5186/aasfm.2019.4437, DOI: 10.5186/aasfm.2019.4437. [COBISS.SI-ID 18672985]
285. GUARNOTTA, Umberto, MARANO, Salvatore Angelo, PAPAGEORGIOU, Nikolaos. Multiple nodal solutions to a Robin problem with sign-changing potential and locally defined reaction. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni. 2019, vol. 30, iss. 2, str. 269-294. ISSN 1120-6330. http://dx.doi.org/10.4171/RLM/847, DOI: 10.4171/RLM/847. [COBISS.SI-ID 18674009]
286. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions for ▫$(p, 2)$▫-equations at resonance. Discrete and continuous dynamical systems. Series S. Apr. 2019, vol. 12, iss. 2, str. 347-374. ISSN 1937-1632. http://www.aimsciences.org/article/doi/10.3934/dcdss.2019024, DOI: 10.3934/dcdss.2019024. [COBISS.SI-ID 18409049]
287. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multivalued periodic Lienard systems. Journal of mathematical analysis and applications. [Print ed.]. Sep. 2019, vol. 477, iss. 1, str. 196-221. ISSN 0022-247X. https://doi.org/10.1016/j.jmaa.2019.04.028, DOI: 10.1016/j.jmaa.2019.04.028. [COBISS.SI-ID 18628697]
288. FILIPPAKIS, Michael E., PAPAGEORGIOU, Nikolaos. Nodal solutions for indefinite Robin problems. Bulletin of the Malaysian Mathematical Sciences Society. Jan. 2019, vol. 42, iss. 1, str. 171-184. ISSN 0126-6705. http://dx.doi.org/10.1007/s40840-017-0477-9, DOI: 10.1007/s40840-017-0477-9. [COBISS.SI-ID 17983833]
289. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear analysis : theory and methods. Cham: Springer, cop. 2019. XI, 577 str. Springer monographs in mathematics. ISBN 978-3-030-03429-0. ISSN 1439-7382. [COBISS.SI-ID 18583897]
290. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear Dirichlet problems with sign changing drift coefficient. Applied Mathematics Letters. [Print ed.]. April 2019, vol. 90, str. 209-214. ISSN 0893-9659. https://doi.org/10.1016/j.aml.2018.11.009, DOI: 10.1016/j.aml.2018.11.009. [COBISS.SI-ID 18495833]
291. BAI, Yunru, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear Dirichlet problems with the combined effects of singular and convection terms. Electronic journal of differential equations. 2019, vol. 2019, art. no. 57, str. 1-13. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2019/57/bai.pdf. [COBISS.SI-ID 18645849]
292. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear Dirichlet problems with unilateral growth on the reaction. Forum mathematicum. 2019, vol. 31, iss. 2, str. 319-340. ISSN 0933-7741. https://doi.org/10.1515/forum-2018-0114, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1515/forum-2018-0114. [COBISS.SI-ID 18471257]
293. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear multivalued periodic systems. Journal of dynamical and control systems. Apr. 2019, vol. 25, iss. 2, str. 219-243. ISSN 1079-2724. https://doi.org/10.1007/s10883-018-9408-9, DOI: 10.1007/s10883-018-9408-9. [COBISS.SI-ID 18382937]
294. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear nonhomogeneous boundary value problems with competition phenomena. Applied mathematics and optimization. Aug. 2019, vol. 80, iss. 1, str. 251-298. ISSN 0095-4616. http://doi.org/10.1007/s00245-017-9465-6, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00245-017-9465-6. [COBISS.SI-ID 18194265]
295. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Nonlinear nonhomogeneous elliptic problems. V: DUTTA, Hemen (ur.). Current trends in mathematical analysis and its interdisciplinary applications. Cham: Springer Nature, cop. 2019. Str. 647-713. ISBN 978-3-030-15241-3, ISBN 978-3-030-15242-0. https://doi.org/10.1007/978-3-030-15242-0_17, DOI: 10.1007/978-3-030-15242-0_17. [COBISS.SI-ID 18713177]
296. CANDITO, Pasquale, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nonlinear nonhomogeneous Robin problems with convection. Annales Academiae scientiarum Fennicae. Mathematica. 2019, vol. 44, fasc. 2, str. 755-767. ISSN 1239-629X. https://doi.org/10.5186/aasfm.2019.4438, DOI: 10.5186/aasfm.2019.4438. [COBISS.SI-ID 18673753]
297. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Nonlinear periodic system with unilateral constraints. Topological Methods in Nonlinear Analysis. Dec. 2019, vol. 54, no. 2b, str. 871-885. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2019.062, DOI: 10.12775/TMNA.2019.062. [COBISS.SI-ID 18817369]
298. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Nonlinear Robin problems with general potential and crossing reaction. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni. 2019, vol. 30, iss. 1, str. 1-29. ISSN 1120-6330. http://dx.doi.org/10.4171/RLM/833, DOI: 10.4171/RLM/833. [COBISS.SI-ID 18628185]
299. PAPAGEORGIOU, Nikolaos, Elsevier - JMAA Conference on Nonlinear Analysis at AGH UST, Conference on the Occasion of the 65th Birthday of Professor Dušan Repovš, Kraków, October 11-12, 2019. Nonlinear singular elliptic problems : Krakow, 11. 10. 2019. [COBISS.SI-ID 18754137]
300. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear singular problems with indefinite potential term. Analysis and mathematical physics. Dec. 2019, vol. 9, iss. 4, str. 2237-2262. ISSN 1664-2368. https://doi.org/10.1007/s13324-019-00333-7, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s13324-019-00333-7. [COBISS.SI-ID 18663001]
301. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Nonlinear systems with Hartman-type perturbations. Monatshefte für Mathematik. [Print ed.]. Oct. 2019, vol. 190, iss. 2, str. 389-404. ISSN 0026-9255. https://doi.org/10.1007/s00605-018-1249-9, DOI: 10.1007/s00605-018-1249-9. [COBISS.SI-ID 18516569]
302. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Nonlinear vector Duffing inclusions with no growth restriction on the orientor field. Topological Methods in Nonlinear Analysis. Sep. 2019, vol. 54, no. 1, str. 257-274. ISSN 1230-3429. http://dx.doi.org/10.12775/TMNA.2019.041, DOI: 10.12775/TMNA.2019.041. [COBISS.SI-ID 18698841]
303. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Nontrivial solutions for a class of resonant ▫$p$▫-Laplacian Neumann problems. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. 2009, vol. 71, iss. 12, str. 6365-6372. ISSN 0362-546X. http://dx.doi.org/10.1016/j.na.2009.06.039, DOI: 10.1016/j.na.2009.06.039. [COBISS.SI-ID 18063961]
304. MARANO, Salvatore Angelo, MARINO, Greta, PAPAGEORGIOU, Nikolaos. On a Dirichlet problem with ▫$(p,q)$▫-Laplacian and parametric concave-convex nonlinearity. Journal of mathematical analysis and applications. [Print ed.]. July 2019, vol. 475, iss. 2, str. 1093-1107. ISSN 0022-247X. https://doi.org/10.1016/j.jmaa.2019.03.006, DOI: 10.1016/j.jmaa.2019.03.006. [COBISS.SI-ID 18592857]
305. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. On a nonlinear parametric Robin problem with a locally defined reaction. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. Aug. 2019, vol. 185, str. 374-387. ISSN 0362-546X. https://doi.org/10.1016/j.na.2019.03.019, DOI: 10.1016/j.na.2019.03.019. [COBISS.SI-ID 18629465]
306. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. On a Robin ▫$(p,q)$▫-equation with a logistic reaction. Rocznik Akademii Górniczo-Hutniczej im. Stanisława Staszica. Opuscula Mathematica. 2019, vol. 39, no. 2, str. 227-245. ISSN 1232-9274. https://doi.org/10.7494/OpMath.2019.39.2.227, DOI: 10.7494/OpMath.2019.39.2.227. [COBISS.SI-ID 18513497]
307. MIMIKOS-STAMATOPOULOS, Nikiforos, PAPAGEORGIOU, Nikolaos. On resonant Robin problems with general potential. Bulletin of the Malaysian Mathematical Sciences Society. July 2019, vol. 42, iss. 4, str. 1485-1506. ISSN 0126-6705. https://doi.org/10.1007/s40840-017-0561-1, DOI: 10.1007/s40840-017-0561-1. [COBISS.SI-ID 18711897]
308. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Pairs of solutions for Robin problems with an indefinite and unbounded potential, resonant at zero and infinity. Manuscripta mathematica. March 2019, vol. 158, iss. 3-4, str. 487-503. ISSN 0025-2611. https://doi.org/10.1007/s00229-018-1044-x, DOI: 10.1007/s00229-018-1044-x. [COBISS.SI-ID 18384217]
309. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Parametric nonlinear resonant Robin problems. Mathematische Nachrichten. Nov. 2019, vol. 292, iss. 11, str. 2456-2480. ISSN 0025-584X. https://doi.org/10.1002/mana.201800505, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1002/mana.201800505. [COBISS.SI-ID 18720857]
310. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Parametric nonlinear singular Dirichlet problems. Nonlinear analysis: real world applications. Feb. 2019, vol. 45, str. 239-254. ISSN 1468-1218. https://doi.org/10.1016/j.nonrwa.2018.07.006, DOI: 10.1016/j.nonrwa.2018.07.006. [COBISS.SI-ID 18409817]
311. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Periodic solutions for implicit evolution inclusions. Evolution equations and control theory. Sep. 2019, vol. 8, iss. 3, str. 621-631. ISSN 2163-2480. https://dx.doi.org/10.3934/eect.2019029, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.3934/eect.2019029. [COBISS.SI-ID 18650457]
312. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Perturbations of nonlinear eigenvalue problems. Communications on pure and applied analysis. May 2019, vol. 18, no. 3, str. 1403-1431. ISSN 1534-0392. http://www.aimsciences.org/article/doi/10.3934/cpaa.2019068, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.3934/cpaa.2019068. [COBISS.SI-ID 18481753]
313. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for a class of singular Dirichlet problems. Journal of differential equations. Nov. 2019, vol. 267, iss. 11, str. 6539-6554. ISSN 0022-0396. https://doi.org/10.1016/j.jde.2019.07.018, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.jde.2019.07.018. [COBISS.SI-ID 18687833]
314. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for nonlinear parametric singular Dirichlet problems. Bulletin of mathematical sciences. Dec. 2019, vol. 9, iss. 3, art. 1950011 (21 str.). ISSN 1664-3607. https://doi.org/10.1142/S1664360719500115, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1142/S1664360719500115. [COBISS.SI-ID 18403929]
315. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos, WINOWSKI, Krzysztof. Positive solutions for nonlinear Robin problems with concave terms. Journal of convex analysis. 2019, vol. 26, no. 4, str. 1143-1172. ISSN 0944-6532. http://www.heldermann.de/JCA/JCA26/JCA264/jca26063.htm. [COBISS.SI-ID 18773081]
316. AVERNA, Diego, PAPAGEORGIOU, Nikolaos, TORNATORE, Elisabetta. Positive solutions for nonlinear Robin problems with convection. Mathematical methods in the applied sciences. Apr. 2019, vol. 42, iss. 6, str. 1907-1920. ISSN 0170-4214. https://doi.org/10.1002/mma.5484, DOI: 10.1002/mma.5484. [COBISS.SI-ID 18545241]
317. BAI, Yunru, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear singular superlinear elliptic equations. Positivity. Sep. 2019, vol. 23, iss. 4, str. 761-778. ISSN 1385-1292. https://doi.org/10.1007/s11117-018-0636-8, DOI: 10.1007/s11117-018-0636-8. [COBISS.SI-ID 18503257]
318. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Positive solutions for singular ▫$(p, 2)$▫-equations. Zeitschrift für angewandte Mathematik und Physik. June 2019, vol. 70, iss. 3, art. 72 (10 str.). ISSN 0044-2275. https://doi.org/10.1007/s00033-019-1117-z, DOI: 10.1007/s00033-019-1117-z. [COBISS.SI-ID 18622809]
319. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for the Robin ▫$p$▫-Laplacian problem with competing nonlinearities. Advances in calculus of variations. Jan. 2019, vol. 12, iss. 1, str. 31-56. ISSN 1864-8258. https://doi.org/10.1515/acv-2016-0039, DOI: 10.1515/acv-2016-0039. [COBISS.SI-ID 18467161]
320. FRAGNELLI, Genni, MUGNAI, Dimitri, PAPAGEORGIOU, Nikolaos. Robin problems for the ▫$p$▫-Laplacian with gradient dependence. Discrete and continuous dynamical systems. Series S. Apr. 2019, vol. 12, iss. 2, str. 287-295. ISSN 1937-1632. http://www.aimsciences.org/article/doi/10.3934/dcdss.2019020, DOI: 10.3934/dcdss.2019020. [COBISS.SI-ID 18409305]
321. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Singular ▫$p$▫-Laplacian equations with superlinear perturbation. Journal of differential equations. Jan. 2019, vol. 266, iss. 2-3, str. 1462-1487. ISSN 0022-0396. https://doi.org/10.1016/j.jde.2018.08.002, DOI: 10.1016/j.jde.2018.08.002. [COBISS.SI-ID 18413145]
322. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Solutions and positive solutions for superlinear Robin problems. Journal of mathematical physics. Oct. 2019, vol. 60, iss. 10, 101506 [26 str.]. ISSN 0022-2488. https://doi.org/10.1063/1.5118760, DOI: 10.1063/1.5118760. [COBISS.SI-ID 18753113]
323. PAPAGEORGIOU, Nikolaos, VETRO, Calogero. Superlinear ▫$(p(z), q(z))$▫-equations. Complex variables and elliptic equations. 2019, vol. 64, no. 1, str. 8-25. ISSN 1747-6933. https://doi.org/10.1080/17476933.2017.1409743, DOI: 10.1080/17476933.2017.1409743. [COBISS.SI-ID 18282585]


2020

324. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. ▫$(p, 2)$▫-equations resonant at any variational eigenvalue. Complex variables and elliptic equations. 2020, vol. 65, iss. 7, str. 1077-1103. ISSN 1747-6933. https://doi.org/10.1080/17476933.2018.1508287, DOI: 10.1080/17476933.2018.1508287. [COBISS.SI-ID 18413401]
325. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. ▫$(p, 2)$▫-Equations with a crossing nonlinearity and concave terms. Applied mathematics and optimization. Feb. 2020, vol. 81, iss. 2, str. 221-251. ISSN 0095-4616. https://doi.org/10.1007/s00245-018-9482-0, DOI: 10.1007/s00245-018-9482-0. [COBISS.SI-ID 18282073]
326. PAPAGEORGIOU, Nikolaos, QIN, Dongdong, RǍDULESCU, Vicenţiu. Anisotropic double-phase problems with indefinite potential: multiplicity of solutions. Analysis and mathematical physics. Dec. 2020, vol. 10, iss. 4, art. 63 (37 str.). ISSN 1664-2368. https://doi.org/10.1007/s13324-020-00409-9, DOI: 10.1007/s13324-020-00409-9. [COBISS.SI-ID 35063555]
327. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Anisotropic equations with indefinite potential and competing nonlinearities. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. Dec. 2020, vol. 201, art. 111861 (24 str.). ISSN 0362-546X. https://doi.org/10.1016/j.na.2020.111861, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.na.2020.111861. [COBISS.SI-ID 18953305]
328. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Concave-convex problems for the Robin ▫$p$▫-Laplacian plus an indefinite potential. Mathematics. Mar. 2020, vol. 8, iss. 3, art. 421 (27 str.). ISSN 2227-7390. https://doi.org/10.3390/math8030421, DOI: 10.3390/math8030421. [COBISS.SI-ID 18946905]
329. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Constant sign and nodal solutions for nonlinear Robin equations with locally defined source term. Mathematical modelling and analysis. 2020, vol. 25, iss. 3, str. 374-390. ISSN 1392-6292. https://doi.org/10.3846/mma.2020.11031, DOI: 10.3846/mma.2020.11031. [COBISS.SI-ID 15569155]
330. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Constant sign and nodal solutions for parametric ▫$(p, 2)$▫-equations. Advances in nonlinear analysis. [Print ed.]. 2020, vol. 9, iss. 1, str. 449-478. ISSN 2191-9496. https://doi.org/10.1515/anona-2020-0009, DOI: 10.1515/anona-2020-0009. [COBISS.SI-ID 18667097]
331. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Continuous spectrum for a two phase eigenvalue problem with an indefinite and unbounded potential. Journal of differential equations. Apr. 2020, vol. 268, iss. 8, str. 4102-4118. ISSN 0022-0396. https://doi.org/10.1016/j.jde.2019.10.026, DOI: 10.1016/j.jde.2019.10.026. [COBISS.SI-ID 18791257]
332. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Double phase problem with critical and locally defined reaction terms. Asymptotic analysis. 2020, vol. 116, no. 2, str. 73-92. ISSN 0921-7134. https://doi.org/10.3233/ASY-191536, DOI: 10.3233/ASY-191536. [COBISS.SI-ID 18714201]
333. LEONARDI, Salvatore, PAPAGEORGIOU, Nikolaos. Existence and multiplicity of positive solutions for parametric nonlinear nonhomogeneous singular Robin problems. Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas. Apr. 2020, vol. 114, iss. 2, art. 100 (24 str.). ISSN 1578-7303. https://doi.org/10.1007/s13398-020-00830-6, DOI: 10.1007/s13398-020-00830-6. [COBISS.SI-ID 18945881]
334. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Existence and multiplicity of solutions for double-phase Robin problems. Bulletin of the London Mathematical Society. June 2020, vol. 52, iss. 3, str. 546-560. ISSN 0024-6093. https://doi.org/10.1112/blms.12347, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1112/blms.12347. [COBISS.SI-ID 16036355]
335. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Ground state and nodal solutions for a class of double phase problems. Zeitschrift für angewandte Mathematik und Physik. Feb. 2020, vol. 71, iss. 1, art. 15 (15 str.). ISSN 0044-2275. https://doi.org/10.1007/s00033-019-1239-3, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00033-019-1239-3. [COBISS.SI-ID 18868057]
336. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Landesman-Lazer type ▫$(p, q)$▫-equations with Neumann condition. Acta Mathematica Scientia. July 2020, vol. 40, iss. 4, str. 991-1000. ISSN 0252-9602. https://doi.org/10.1007/s10473-020-0408-y, DOI: 10.1007/s10473-020-0408-y. [COBISS.SI-ID 19477251]
337. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. Multiple solutions with sign information for ▫$(p,2)$▫-equations with asymmetric resonant reaction. Pure and applied functional analysis : an international journal. 2020, vol. 5, no. 4, str. 817-850. ISSN 2189-3756. http://www.yokohamapublishers.jp//online-p/Pafa/vol5/pafav5n4p817.pdf. [COBISS.SI-ID 24679939]
338. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions with sign information for a ▫$(p,2)$▫-equation with combined nonlinearities. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. Mar. 2020, vol. 192, art. 111716 (25 str.). ISSN 0362-546X. https://doi.org/10.1016/j.na.2019.111716, DOI: 10.1016/j.na.2019.111716. [COBISS.SI-ID 18845529]
339. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions with sign information for a class of coercive ▫$(p, 2)$▫-equations. Bulletin of the Malaysian Mathematical Sciences Society. May 2020, vol. 43, iss. 3, str. 2343-2371. ISSN 0126-6705. https://doi.org/10.1007/s40840-019-00808-7, DOI: 10.1007/s40840-019-00808-7. [COBISS.SI-ID 18688345]
340. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions with sign information for semilinear Neumann problems with convection. Revista matemática complutense. Jan 2020, vol. 33, iss. 1, str. 19-38. ISSN 1139-1138. https://doi.org/10.1007/s13163-019-00312-3, DOI: 10.1007/s13163-019-00312-3. [COBISS.SI-ID 18671449]
341. ONETE, Florin-Iulian, PAPAGEORGIOU, Nikolaos, VETRO, Calogero. A multiplicity theorem for parametric superlinear ▫$(p,q)$▫-equations : dedicated to Prof. Dušan D. Repovš on the occasion of his 65th birthday. Rocznik Akademii Górniczo-Hutniczej im. Stanisława Staszica. Opuscula Mathematica. 2020, vol. 40, no. 1, str. 131-149. ISSN 1232-9274. https://doi.org/10.7494/OpMath.2020.40.1.131, DOI: 10.7494/OpMath.2020.40.1.131. [COBISS.SI-ID 18921561]
342. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Noncoercive resonant ▫$(p, 2)$▫-equations with concave terms. Advances in nonlinear analysis. [Print ed.]. Jan. 2020, vol. 9, iss. 1, str. 228-249. ISSN 2191-9496. https://doi.org/10.1515/anona-2018-0175, DOI: 10.1515/anona-2018-0175. [COBISS.SI-ID 18464601]
343. PAPAGEORGIOU, Nikolaos, ZHANG, Youpei. Nonlinear nonhomogeneous Dirichlet problems with singular and convection terms. Boundary value problems. Dec. 2020, vol. 2020, iss. 1, art. 153, str. 1-21. ISSN 1687-2770. https://doi.org/10.1186/s13661-020-01450-0. [COBISS.SI-ID 29919747]
344. PAPAGEORGIOU, Nikolaos, REPOVŠ, Dušan, VETRO, Calogero. Nonlinear nonhomogeneous Robin problems with almost critical and partially concave reaction. The Journal of geometric analysis. Apr. 2020, vol. 30, iss. 2, str. 1774-1803. ISSN 1050-6926. https://doi.org/10.1007/s12220-019-00278-0, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s12220-019-00278-0. [COBISS.SI-ID 18727769]
345. GASIŃSKI, Leszek, KRECH, Ireneusz, PAPAGEORGIOU, Nikolaos. Nonlinear nonhomogeneous Robin problems with gradient dependent reaction. Nonlinear analysis: real world applications. Oct. 2020, vol. 55, art. 103135 (13. str.). ISSN 1468-1218. https://doi.org/10.1016/j.nonrwa.2020.103135, DOI: 10.1016/j.nonrwa.2020.103135. [COBISS.SI-ID 18947161]
346. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear nonhomogeneous singular problems. Calculus of variations and partial differential equations. Feb. 2020, vol. 59, iss. 1, art. 9 [31 str.]. ISSN 0944-2669. https://doi.org/10.1007/s00526-019-1667-0, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00526-019-1667-0. [COBISS.SI-ID 18823001]
347. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Nonlinear resonant problems with an indefinite potential and concave boundary condition. Electronic journal of qualitative theory of differential equations. 2020, vol. 2020, art. 51 (16 str.). ISSN 1417-3875. http://www.math.u-szeged.hu/ejqtde/p8337.pdf, DOI: 10.14232/ejqtde.2020.1.51. [COBISS.SI-ID 63565059]
348. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Nonlinear, nonhomogeneous Robin problems with indefinite potential and general reaction. Applied mathematics and optimization. June 2020, vol. 81, iss. 3, str. 823-857. ISSN 0095-4616. https://doi.org/10.1007/s00245-018-9521-x, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00245-018-9521-x. [COBISS.SI-ID 18436441]
349. LEONARDI, Salvatore, PAPAGEORGIOU, Nikolaos. On a class of critical Robin problems. Forum mathematicum. Jan. 2020, vol. 32, iss. 1, str. 95-109. ISSN 0933-7741. https://doi.org/10.1515/forum-2019-0160, DOI: 10.1515/forum-2019-0160. [COBISS.SI-ID 18754649]
350. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. On noncoercive ▫$(p, q)$▫-equations. Acta Mathematica Scientia. Sep. 2021, vol. 41, iss. 5, str. 1788-1808. ISSN 0252-9602. https://link.springer.com/article/10.1007/s10473-021-0524-3, DOI: 10.1007/s10473-021-0524-3. [COBISS.SI-ID 69175043]
351. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Parameter dependence for the positive solutions of nonlinear, nonhomogeneous Robin problems. Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas. Jan. 2020, vol. 114, iss. 1, art. 45 (29 str.). ISSN 1578-7303. https://doi.org/10.1007/s13398-019-00779-1, DOI: 10.1007/s13398-019-00779-1. [COBISS.SI-ID 18868313]
352. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Positive and nodal solutions for nonlinear nonhomogeneous parametric Neumann problems. Electronic journal of differential equations. 2020, vol. 2020, art. no. 12, str. 1-20. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2020/12/papageorgiou.pdf. [COBISS.SI-ID 18912345]
353. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Positive solutions for ▫$(p, 2)$▫-equations with superlinear reaction and a concave boundary term. Electronic journal of qualitative theory of differential equations. 2020, vol. 2020, art. 4 (19 str.). ISSN 1417-3875. http://www.math.u-szeged.hu/ejqtde/p8087.pdf, DOI: 10.14232/ejqtde.2020.1.4. [COBISS.SI-ID 18936665]
354. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Positive solutions for anisotropic singular ▫$(p,q)$▫-equations. Zeitschrift für angewandte Mathematik und Physik. Oct. 2020, vol. 71, iss. 5, art. 155 (16 str.). ISSN 0044-2275. https://doi.org/10.1007/s00033-020-01385-7, DOI: 10.1007/s00033-020-01385-7. [COBISS.SI-ID 27287043]
355. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear Dirichlet problems with convection. Applied mathematics and optimization. Oct. 2020, vol. 82, iss. 2, 451-470 str. ISSN 0095-4616. https://doi.org/10.1007/s00245-018-9534-5, DOI: 10.1007/s00245-018-9534-5. [COBISS.SI-ID 18470233]
356. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for nonlinear Neumann problems with singular terms and convection. Journal de Mathématiques Pures et Appliquées. [Print ed.]. 2020, vol. 136, str. 1-21. ISSN 0021-7824. https://doi.org/10.1016/j.matpur.2020.02.004, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.matpur.2020.02.004. [COBISS.SI-ID 18927193]
357. LEONARDI, Salvatore, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear Robin problems with indefinite potential and competing nonlinearities. Positivity. Apr. 2020, vol. 24, iss. 2, str. 339-367. ISSN 1385-1292. https://doi.org/10.1007/s11117-019-00681-5, DOI: 10.1007/s11117-019-00681-5. [COBISS.SI-ID 18646617]
358. GASIŃSKI, Leszek, KRECH, Ireneusz, PAPAGEORGIOU, Nikolaos. Positive solutions for parametric ▫$(p(z), q(z))$▫-equations. Open Mathematics. 2020, vol. 18, iss. 1, str. 1076-1096. ISSN 2391-5455. https://doi.org/10.1515/math-2020-0074, DOI: 10.1515/math-2020-0074. [COBISS.SI-ID 37426179]
359. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, ZHANG, Youpei. Positive solutions for parametric singular Dirichlet ▫$(p,q)$▫-equations. Nonlinear Analysis. Theory, Methods and Applications. [Print ed.]. Sep. 2020, vol. 198, art. 111882 (23 str.). ISSN 0362-546X. https://doi.org/10.1016/j.na.2020.111882, DOI: 10.1016/j.na.2020.111882. [COBISS.SI-ID 18963033]
360. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Positive solutions for the Robin ▫$p$▫-Laplacian plus an indefinite potential. Pure and applied functional analysis : an international journal. 2020, vol. 5, no. 15, str. 1217-1236. ISSN 2189-3756. http://www.ybook.co.jp/online2/oppafa/vol5/p1217.html, Repozitorij Univerze v Ljubljani – RUL. [COBISS.SI-ID 32039427]
361. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Relaxation for a class of control systems with unilateral constraints. Acta applicandae mathematicae. June 2020, vol. 167, iss. 1, str. 99-115. ISSN 0167-8019. https://doi.org/10.1007/s10440-019-00270-4, DOI: 10.1007/s10440-019-00270-4. [COBISS.SI-ID 18657113]
362. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Relaxation methods for optimal control problems. Bulletin of mathematical sciences. Apr. 2020, vol. 10, iss. 1, art. 2050004 (24 str.). ISSN 1664-3607. https://doi.org/10.1142/S1664360720500046, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1142/S1664360720500046. [COBISS.SI-ID 18921817]
363. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Relaxation of optimal control problems driven by nonlinear evolution equations. Evolution equations and control theory. Dec. 2020, vol. 9, iss. 4, str. 1027-1040. ISSN 2163-2480. https://www.aimsciences.org/article/doi/10.3934/eect.2020050, DOI: 10.3934/eect.2020050. [COBISS.SI-ID 18961753]
364. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Resonant anisotropic ▫$(p,q)$▫-equations. Mathematics. Aug. 2020, vol. 8, iss. 8, art. 1332 (21 str.). ISSN 2227-7390. https://doi.org/10.3390/math8081332, DOI: 10.3390/math8081332. [COBISS.SI-ID 24916227]
365. HU, Shouchuan, PAPAGEORGIOU, Nikolaos. Semilinear Robin problems with indefinite potential and competition phenomena. Acta applicandae mathematicae. Aug. 2020, vol. 168, iss. 1, str. 187-216. ISSN 0167-8019. https://doi.org/10.1007/s10440-019-00284-y, DOI: 10.1007/s10440-019-00284-y. [COBISS.SI-ID 18695001]
366. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Singular double phase problems with convection. Acta applicandae mathematicae. Dec. 2020, vol. 170, iss. 1, str. 947-962. ISSN 0167-8019. https://doi.org/10.1007/s10440-020-00364-4, DOI: 10.1007/s10440-020-00364-4. [COBISS.SI-ID 38705667]
367. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Singular Neumann ▫$(p, q)$▫-equations. Positivity. Sep. 2020, vol. 24, iss. 4, str. 1017-1040. ISSN 1385-1292. https://doi.org/10.1007/s11117-019-00717-w, DOI: 10.1007/s11117-019-00717-w. [COBISS.SI-ID 18813785]
368. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Superlinear perturbations of the eigenvalue problem for the Robin Laplacian plus an indefinite and unbounded potential. Results in mathematics. Sep. 2020, vol. 75, iss. 3, art. 116 (22 str.). ISSN 1422-6383. https://doi.org/10.1007/s00025-020-01234-z, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s00025-020-01234-z. [COBISS.SI-ID 22444547]
369. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Superlinear Robin problems with indefinite linear part. Bulletin of the Malaysian Mathematical Sciences Society. Jan. 2020, vol. 43, no. 1, str. 537-562. ISSN 0126-6705. https://doi.org/10.1007/s40840-018-0701-2, DOI: 10.1007/s40840-018-0701-2. [COBISS.SI-ID 18487897]


2021

370. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. ▫$(p, q)$▫-Equations with singular and concave convex nonlinearities. Applied mathematics and optimization. Dec. 2021, vol. 84, iss. 3, str. 2601-2628. ISSN 0095-4616. https://doi.org/10.1007/s00245-020-09720-0, DOI: 10.1007/s00245-020-09720-0. [COBISS.SI-ID 38696707]
371. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Anisotropic ▫$(p, q)$▫-equations with gradient dependent reaction. Nonlinearity. Aug. 2021, vol. 34, no. 8, str. 5319-5343. ISSN 0951-7715. https://iopscience.iop.org/article/10.1088/1361-6544/ac0612, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1088/1361-6544/ac0612. [COBISS.SI-ID 69174531]
372. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, TANG, Xianhua. Anisotropic Robin problems with logistic reaction. Zeitschrift für angewandte Mathematik und Physik. June 2021, vol. 72, iss. 3, art. 94 (21 str.). ISSN 0044-2275. https://link.springer.com/article/10.1007/s00033-021-01514-w, DOI: 10.1007/s00033-021-01514-w. [COBISS.SI-ID 61505539]
373. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, ZHANG, Youpei. Anisotropic singular double phase Dirichlet problems. Discrete and continuous dynamical systems. Series S. Dec. 2021, vol. 14, iss. 12, str. 4465-4502. ISSN 1937-1632. https://www.aimsciences.org/article/doi/10.3934/dcdss.2021111, DOI: 10.3934/dcdss.2021111. [COBISS.SI-ID 97124611]
374. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Asymptotically vanishing nodal solutions for critical double phase problems. Asymptotic analysis. 2021, vol. 124, iss.3-4, str. 291-302. ISSN 0921-7134. https://content.iospress.com/articles/asymptotic-analysis/asy201645, DOI: 10.3233/ASY-201645. [COBISS.SI-ID 96900355]
375. PAPAGEORGIOU, Nikolaos, ZHANG, Youpei. Constant sign and nodal solutions for superlinear ▫$(p, q)$▫-equations with indefinite potential and a concave boundary term. Advances in nonlinear analysis. [Print ed.]. 2021, vol. 10, iss. 1, str. 76-101. ISSN 2191-9496. https://doi.org/10.1515/anona-2020-0101, DOI: 10.1515/anona-2020-0101. [COBISS.SI-ID 18989571]
376. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Constant sign and nodal solutions for superlinear double phase problems. Advances in calculus of variations. 2021, vol. 14, iss. 4, str. 613-626. ISSN 1864-8258. https://doi.org/10.1515/acv-2019-0040, DOI: 10.1515/acv-2019-0040. [COBISS.SI-ID 18824537]
377. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Dirichlet ▫$(p,q)$▫-equations with gradient dependent and locally defined reaction. Electronic journal of differential equations. 2021, vol. 2021, art. 34 (8 str.). ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2021/34/liu.pdf. [COBISS.SI-ID 69332227]
378. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Eigenvalue problems and their perturbations for the weighted ▫$(p,q)$▫-Laplacian. Communications in Nonlinear Science and Numerical Simulation. Oct. 2021, vol. 101, art. 105887 (27 str.). ISSN 1007-5704. https://www.sciencedirect.com/science/article/pii/S1007570421001994, DOI: 10.1016/j.cnsns.2021.105887. [COBISS.SI-ID 64220931]
379. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Existence and nonexistence of positive solutions for singular ▫$(p, q)$▫-equations with superdiffusive perturbation. Results in mathematics. Dec. 2021, vol. 76, iss. 4, art. 169 (20 str.). ISSN 1422-6383. https://link.springer.com/article/10.1007/s00025-021-01484-5, DOI: 10.1007/s00025-021-01484-5. [COBISS.SI-ID 72343299]
380. PAPAGEORGIOU, Nikolaos, VETRO, Calogero. Existence and relaxation results for second order multivalued systems. Acta applicandae mathematicae. June 2021, vol. 173, iss. 1, art. 5 (36 str.). ISSN 0167-8019. https://link.springer.com/article/10.1007/s10440-021-00410-9, DOI: 10.1007/s10440-021-00410-9. [COBISS.SI-ID 62537475]
381. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Multiple positive solutions for singular anisotropic Dirichlet problems. Electronic journal of qualitative theory of differential equations. 2021, vol. 2021, art. 47 (12 str.). ISSN 1417-3875. http://www.math.u-szeged.hu/ejqtde/p9224.pdf, DOI: 10.14232/ejqtde.2021.1.47. [COBISS.SI-ID 96768771]
382. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions for parametric double phase Dirichlet problems. Communications in contemporary mathematics. June 2021, vol. 23, no.4, art. 2050006 (18 str.). ISSN 0219-1997. https://www.worldscientific.com/doi/abs/10.1142/S0219199720500066, DOI: 10.1142/S0219199720500066. [COBISS.SI-ID 18898777]
383. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Multiple solutions for Robin ▫$(p, q)$▫-equations plus an indefinite potential and a reaction concave near the origin. Analysis and mathematical physics. June 2021, vol. 11, iss. 2, art. 78 (27 str.). ISSN 1664-2368. https://doi.org/10.1007/s13324-021-00482-8, DOI: 10.1007/s13324-021-00482-8. [COBISS.SI-ID 57473027]
384. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Multiple solutions for semilinear Robin problems with superlinear reaction and no symmetries. Electronic journal of differential equations. 2021, vol. 2021, art. no. 12, str. 1-24. ISSN 1072-6691. https://ejde.math.txstate.edu/Volumes/2021/12/papageorgiou.pdf. [COBISS.SI-ID 58166275]
385. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Multiple solutions with sign information for a class of parametric superlinear ▫$(p, 2)$▫-equations. Applied mathematics and optimization. June 2021, vol. 83, iss. 3, str. 1523-1545. ISSN 0095-4616. https://doi.org/10.1007/s00245-019-09595-w, DOI: 10.1007/s00245-019-09595-w. [COBISS.SI-ID 18687577]
386. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Multiple solutions with sign information for superlinea ▫$(p, q)$▫-equations. Positivity. Nov. 2021, vol. 25, iss. 5, str. 1805-1820. ISSN 1385-1292. https://link.springer.com/article/10.1007%2Fs11117-021-00839-0, DOI: 10.1007/s11117-021-00839-0. [COBISS.SI-ID 69175299]
387. AIZICOVICI, Sergiu, PAPAGEORGIOU, Nikolaos, STAICU, Vasile. A multiplicity theorem for noncoercive ▫$(p,2)$▫-equations. Pure and applied functional analysis : an international journal. 2021, vol. 6, no. 2, str. 231-246. ISSN 2189-3756. http://yokohamapublishers.jp/online-p/Pafa/vol6/pafav6n2p231.pdf. [COBISS.SI-ID 97117699]
388. DERĘGOWSKA, Beata, GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. A multiplicity theorem for superlinear double phase problems. Symmetry. Sep. 2021, vol. 13, iss. 9, art. 1556 (23 str.). ISSN 2073-8994. https://doi.org/10.3390/sym13091556, https://www.mdpi.com/2073-8994/13/9/1556, DOI: 10.3390/sym13091556. [COBISS.SI-ID 74438147]
389. PAPAGEORGIOU, Nikolaos, QIN, Dongdong, RǍDULESCU, Vicenţiu. Nonlinear eigenvalue problems for the ▫$(p, q)$▫-Laplacian. Bulletin des sciences mathématiques. [Print ed.]. Nov. 2021, vol. 172, art. 103039 (29 str.). ISSN 0007-4497. https://www.sciencedirect.com/science/article/pii/S0007449721000956, DOI: 10.1016/j.bulsci.2021.103039. [COBISS.SI-ID 72508163]
390. PAPAGEORGIOU, Nikolaos, SCAPELLATO, Andrea. Nonlinear singular problems with convection. Journal of differential equations. Sep. 2021, vol. 296, str. 493-511. ISSN 0022-0396. https://www.sciencedirect.com/science/article/pii/S0022039621003806, DOI: 10.1016/j.jde.2021.06.001. [COBISS.SI-ID 68197379]
391. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Nonlinear singular problems with indefinite potential and a superlinear perturbation. Complex variables and elliptic equations. 2021, vol. 66, iss. 11, str. 1881-1903. ISSN 1747-6933. https://doi.org/10.1080/17476933.2020.1788004, DOI: 10.1080/17476933.2020.1788004. [COBISS.SI-ID 22438915]
392. PAPAGEORGIOU, Nikolaos, ZHANG, Youpei. On the set of positive solutions for resonant Robin ▫$(p, q)$▫-equations. Advances in nonlinear analysis. [Print ed.]. 2021, vol. 10, iss. 1, str. 1132-1153. ISSN 2191-9496. https://www.degruyter.com/document/doi/10.1515/anona-2020-0175/html, DOI: 10.1515/anona-2020-0175. [COBISS.SI-ID 59049987]
393. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Pairs of positive solutions for nonhomogeneous Dirichlet problems. Bulletin of the Malaysian Mathematical Sciences Society. Nov. 2021, vol. 44, iss. 6, str. 3969-3981. ISSN 0126-6705. https://link.springer.com/article/10.1007/s40840-021-01124-9, DOI: 10.1007/s40840-021-01124-9. [COBISS.SI-ID 66977027]
394. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos. Positive solutions for nonlinear Robin problems with convection. Science, Technology and Innovation. 2021, vol. 12, no. 1, str. 26-36. ISSN 2544-9125. https://doi.org/10.5604/01.3001.0015.2690, DOI: 10.5604/01.3001.0015.2690. [COBISS.SI-ID 87397379]
395. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Positive solutions for resonant ▫$(p, q)$▫-equations with convection. Advances in nonlinear analysis. [Print ed.]. Jan. 2021, vol. 10, iss. 1, str. 217-232. ISSN 2191-9496. https://doi.org/10.1515/anona-2020-0108, DOI: 10.1515/anona-2020-0108. [COBISS.SI-ID 23228163]
396. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Positive solutions for singular anisotropic ▫$(p, q)$▫-equations. The Journal of geometric analysis. Dec. 2021, vol. 31, iss. 12, str. 11849-11877. ISSN 1050-6926. https://link.springer.com/article/10.1007/s12220-021-00703-3, DOI: 10.1007/s12220-021-00703-3. [COBISS.SI-ID 66245379]
397. PAPAGEORGIOU, Nikolaos, REPOVŠ, Dušan, VETRO, Calogero. Positive solutions for singular double phase problems. Journal of mathematical analysis and applications. [Print ed.]. Sep. 2021, vol. 501, iss.1, art. 123896 (13 str.). ISSN 0022-247X. https://doi.org/10.1016/j.jmaa.2020.123896, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.jmaa.2020.123896. [COBISS.SI-ID 18898521]
398. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Positive solutions for weighted singular ▫$p$▫-Laplace equations via Nehari manifolds. Applicable analysis. 2021, vol. 100, iss. 11, str. 2436-2448. ISSN 0003-6811. https://doi.org/10.1080/00036811.2019.1688791, DOI: 10.1080/00036811.2019.1688791. [COBISS.SI-ID 18811225]
399. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Robin double-phase problems with singular and superlinear terms. Nonlinear analysis: real world applications. Apr. 2021, vol. 58, art. 103217 (20 str.). ISSN 1468-1218. https://doi.org/10.1016/j.nonrwa.2020.103217, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1016/j.nonrwa.2020.103217. [COBISS.SI-ID 30724867]
400. GASIŃSKI, Leszek, PAPAGEORGIOU, Nikolaos, PETIURENKO, Anna. Schrödinger Robin problems with indefinite potential and logistic reaction. Complex variables and elliptic equations. 2021, vol. 66, no. 1, str. 118-143. ISSN 1747-6933. https://doi.org/10.1080/17476933.2019.1709968, DOI: 10.1080/17476933.2019.1709968. [COBISS.SI-ID 18885465]
401. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. A singular ▫$(p,q)$▫-equation with convection and a locally defined perturbation. Applied Mathematics Letters. [Print ed.]. Aug. 2021, vol. 118, art. 107175 (7 str.). ISSN 0893-9659. https://doi.org/10.1016/j.aml.2021.107175, DOI: 10.1016/j.aml.2021.107175. [COBISS.SI-ID 57624835]
402. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Singular and superlinear perturbations of the eigenvalue problem for the Dirichlet ▫$p$▫-Laplacian. Results in mathematics. March 2021, vol. 76, iss. 1, art. 28 (18 str.). ISSN 1422-6383. https://link.springer.com/content/pdf/10.1007/s00025-020-01340-y.pdf, DOI: 10.1007/s00025-020-01340-y. [COBISS.SI-ID 46885379]
403. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Singular Dirichlet ▫$(p, q)$▫-equations. Mediterranean journal of mathematics. Aug. 2021, vol. 18, iss. 4, art. 141 (20 str.). ISSN 1660-5446. https://link.springer.com/article/10.1007/s00009-021-01780-y, DOI: 10.1007/s00009-021-01780-y. [COBISS.SI-ID 66010115]
404. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Solutions for parametric double phase Robin problems. Asymptotic analysis. 2021, vol. 121, iss.2, str. 159-170. ISSN 0921-7134. https://doi.org/10.3233/ASY-201598, DOI: 10.3233/ASY-201598. [COBISS.SI-ID 18899801]
405. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Solutions with sign information for nonlinear Robin problems with no growth restriction on reaction. Applicable analysis. 2021, vol. 100, iss. 1, str. 191-205. ISSN 0003-6811. https://doi.org/10.1080/00036811.2019.1597059, DOI: 10.1080/00036811.2019.1597059. [COBISS.SI-ID 18608217]
406. ONETE, Florin-Iulian, PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu. Twin positive solutions for resonant singular ▫$(p,q)$▫-equations. Electronic journal of differential equations. 2021, spec. iss. 01, str. 169-182. ISSN 1072-6691. https://ejde.math.txstate.edu/special/01/r1/radulescu.pdf. [COBISS.SI-ID 84794883]


2022

407. LIU, Zhenhai, PAPAGEORGIOU, Nikolaos. Anisotropic ▫$(p, q)$▫-equations with competition phenomena. Acta Mathematica Scientia. 2022, vol. 42b, iss. 1, str. 1-24. ISSN 0252-9602. https://link.springer.com/article/10.1007/s10473-022-0117-9, https://link.springer.com/content/pdf/10.1007/s10473-022-0117-9.pdf, DOI: 10.1007/s10473-022-0117-9. [COBISS.SI-ID 74439683]
408. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Anisotropic singular Neumann equations with unbalanced growth. Potential analysis. June 2022, vol. 57, iss. 1, str. 55-82. ISSN 0926-2601. https://link.springer.com/content/pdf/10.1007/s11118-021-09905-4.pdf, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1007/s11118-021-09905-4. [COBISS.SI-ID 57450755]
409. ZENG, Shengda, PAPAGEORGIOU, Nikolaos. Arbitrarily small nodal solutions for nonhomogeneous Robin problems. Asymptotic analysis. 2022, vol. 128, iss.4, str. 539-553. ISSN 0921-7134. https://content.iospress.com/articles/asymptotic-analysis/asy211716, DOI: 10.3233/ASY-211716. [COBISS.SI-ID 70553347]
410. PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. On a class of singular anisotropic ▫$(p, q$)$▫-equations. Revista matemática complutense. May 2022, vol. 35, iss. 2, str. 545-571. ISSN 1139-1138. https://doi.org/10.1007/s13163-021-00395-x, DOI: 10.1007/s13163-021-00395-x. [COBISS.SI-ID 59699203]
411. CRESPO-BLANCO, Ángel, PAPAGEORGIOU, Nikolaos, WINKERT, Patrick. Parametric superlinear double phase problems with singular term and critical growth on the boundary. Mathematical methods in the applied sciences. March 2022, vol. 45, iss. 4, str. 2276-2298. ISSN 0170-4214. https://onlinelibrary.wiley.com/doi/10.1002/mma.7924, DOI: 10.1002/mma.7924. [COBISS.SI-ID 90027779]
412. ZENG, Shengda, PAPAGEORGIOU, Nikolaos. Positive solutions for ▫$(p, q)$▫-equations with convection and a sign-changing reaction. Advances in nonlinear analysis. [Print ed.]. Jan. 2022, vol. 11, iss. 1, str. 40-57. ISSN 2191-9496. https://doi.org/10.1515/anona-2020-0176, DOI: 10.1515/anona-2020-0176. [COBISS.SI-ID 69494275]
413. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Singular ▫$(p, q)$▫-equations with superlinear reaction and concave boundary condition. Applicable analysis. 2022, vol. 101, iss. 3, str. 891-913. ISSN 0003-6811. https://doi.org/10.1080/00036811.2020.1761018, DOI: 10.1080/00036811.2020.1761018. [COBISS.SI-ID 14245635]
414. PAPAGEORGIOU, Nikolaos, ZHANG, Chao. Singular ▫$(p,q)$▫-equations with competing perturbations. Applicable analysis. 2022, vol. 101, iss. 17, str. 6151-6171. ISSN 0003-6811. https://www.tandfonline.com/doi/full/10.1080/00036811.2021.1919644, DOI: 10.1080/00036811.2021.1919644. [COBISS.SI-ID 61497603]
415. BAI, Yunru, PAPAGEORGIOU, Nikolaos, ZENG, Shengda. A singular eigenvalue problem for the Dirichlet ▫$(p, q)$▫-Laplacian. Mathematische Zeitschrift. Jan. 2022, vol. 300, iss. 1, str. 325-345. ISSN 0025-5874. https://link.springer.com/article/10.1007/s00209-021-02803-w, DOI: 10.1007/s00209-021-02803-w. [COBISS.SI-ID 68201219]


2023

416. PAPAGEORGIOU, Nikolaos, REPOVŠ, Dušan, VETRO, Calogero. Anisotropic ▫$(p,q)$▫-equations with convex and negative concave terms. V: CANDELA, Anna Maria (ur.), CAPPELLETTI MONTANO, Mirella (ur.), MANGINO, Elisabetta (ur.). Recent advances in mathematical analysis : celebrating the 70th anniversary of Francesco Altomare. Cham: Birkhäuser: Springer, cop. 2023. Str. 425-441. Trends in mathematics. ISBN 978-3-031-20020-5. https://link.springer.com/chapter/10.1007/978-3-031-20021-2_21, Repozitorij Univerze v Ljubljani – RUL. [COBISS.SI-ID 154485507]
417. PAPAGEORGIOU, Nikolaos, REPOVŠ, Dušan, VETRO, Calogero. Constant sign and nodal solutions for parametric anisotropic ▫$(p, 2)$▫-equations. Applicable analysis. 2023, vol. 102, iss. 4, str. 1059-1076. ISSN 0003-6811. https://www.tandfonline.com/doi/full/10.1080/00036811.2021.1971199, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.1080/00036811.2021.1971199. [COBISS.SI-ID 76549635]
418. PAPAGEORGIOU, Nikolaos, RǍDULESCU, Vicenţiu, REPOVŠ, Dušan. Global multiplicity for parametric anisotropic Neumann ▫$(p,q)$▫-equations. Topological Methods in Nonlinear Analysis. Mar. 2023, vol. 61, no. 1, str. 393-422. ISSN 1230-3429. https://apcz.umk.pl/TMNA/article/view/42809, Repozitorij Univerze v Ljubljani – RUL, DOI: 10.12775/TMNA.2022.010. [COBISS.SI-ID 143318019]
419. PAPAGEORGIOU, Nikolaos, VETRO, Calogero, VETRO, Francesca. Nonlinear concave-convex problems with indefinite weight. Complex variables and elliptic equations. 2023, vol. 68, iss. 2, str. 291-305. ISSN 1747-6933. https://www.tandfonline.com/doi/full/10.1080/17476933.2021.1988584, DOI: 10.1080/17476933.2021.1988584. [COBISS.SI-ID 82628355]


2024

420. Abstract and applied analysis. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2002-). Tampa, Fla.: Mancorp Pub. ISSN 1085-3375. [COBISS.SI-ID 12311129]
421. Discrete and continuous dynamical systems. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 1995-). Springfield (MO): American Institute of Mathematical Sciences, 1995-. ISSN 1078-0947. http://www.aimsciences.org/journals/home.jsp?journalID=1. [COBISS.SI-ID 15865689]
422. Discussiones Mathematicae. Differential Inclusions, Control and Optimization. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2000-). Zielona Góra: Technical University Press; Zielona Góra: University of Zielona Góra Press. ISSN 1509-9407. [COBISS.SI-ID 515059481]
423. International journal of dynamical systems and differential equations. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2007-). [Olney]: Inderscience, 2007-. ISSN 1752-3583. http://www.inderscienceonline.com/loi/ijdsde. [COBISS.SI-ID 17838169]
424. Journal of applied mathematics and stochastic analysis. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 1991-). [Melbourne, Fla?]: Society of Applied Mathematics, Modeling, and Simulation; [Melbourne, Fla]: North Atlantic Science Publishing Company; New York: Hindawi Publishing Corporation, [1990]- ;. ISSN 1048-9533. http://bibpurl.oclc.org/web/13034;http://www.hindawi.com/journals/jamsa/index.html. [COBISS.SI-ID 513952281]
425. Journal of inequalities and applications. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2003-). Berlin: Springer, 2011-. ISSN 1029-242X. http://www.journalofinequalitiesandapplications.com/content, http://www.hindawi.com/journals/jia/. [COBISS.SI-ID 16035161]
426. Libertas mathematica. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2012-). Aveiro: Departamento de Matemática da Universidade, 2012-. ISSN 2182-567X. http://system.lm-ns.org/index.php/lm-ns/issue/archive. [COBISS.SI-ID 17838425]
427. Minimax theory and its applications. PAPAGEORGIOU, Nikolaos (član uredniškega odbora 2016-). Lemgo: Heldermann, 2016-. ISSN 2199-1413. [COBISS.SI-ID 17906265]



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