| Leszek Gasiński, Nikolaos S. Papageorgiou, Nontrivial solutions for Neumann problems with an indefinite linear part, Applied Mathematics and Computation vol. 217 (2010), 2666-2675 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, A multiplicity theorem for double resonant periodic problems, Advanced Nonlinear Studies vol. 10 (2010), 819-836 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Multiple solutions for nonlinear Neumann problems with asymmetric reaction, via Morse theory, Advanced Nonlinear Studies vol. 11 (2011), 781-808 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Anisotropic nonlinear Neumann problems, Calculus of Variations and Partial Differential Equations vol. 42 (2011), 323-354 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Multiple solutions for nonlinear coercive problems with a nonhomogeneous differential operator and a nonsmooth potential, Set-Valued and Variational Analysis vol. 20 (2012), 417-443 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Positive solutions for nonlinear Neumann eigenvalue problems, Dynamic Systems and Applications vol. 21 (2012), 235-250 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Dirichlet problems with double resonance and an indefinite potential, Nonlinear Analysis, Theory, Methods and Applications vol. 75 (2012), 4560-4595 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Bifurcation-type results for nonlinear parametric elliptic equations, Proceedings of the Royal Society of Edinburgh Section A: Mathematics vol. 142A (2012), 595-623 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Dirichlet problems with an indefinite and unbounded potential and concave-convex nonlinearities, Abstract and Applied Analysis vol. 2012 (2012), 1-36 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Nonhomogeneous nonlinear Dirichlet problems with a p-superlinear reaction, Abstract and Applied Analysis vol. 2012 (2012), 1-28 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Nonlinear elliptic equations with singular terms and combined nonlinearities, Annales Henri Poincare vol. 13 (2012), 481-512 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Multiple solutions for asymptotically (p -1)-homogeneous p-Laplacian equations, Journal of Functional Analysis vol. 262 (2012), 2403-2435 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Multiplicity of positive solutions for eigenvalue problems of (p, 2)-equations, Boundary Value Problems vol. 2012 (2012), 1-17 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Existence and multiplicity of solutions for noncoercive Neumann problems with p-Laplacian, Schedae Informaticae vol. 21 (2012), 27-40 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Neumann problems resonant at zero and infinity, Annali di Matematica Pura ed Applicata vol. 191 (2012), 395-430 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Existence and uniqueness of positive solutions for the Neumann p-Laplacian, Positivity vol. 17 (2013), 309-332 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, A pair of positive solutions for the Dirichlet p(z)-Laplacian with concave and convex nonlinearities, Journal of Global Optimization vol. 56 (2013), 1347-1360 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Pairs of nontrivial solutions for resonant Neumann problems, Journal of Mathematical Analysis and Applications vol. 398 (2013), 649-663 |
| Leszek Gasiński, Nikolaos S. Papageorgiou, Multiplicity of solutions for Neumann problems with an indefinite and unbounded potential, Communications on Pure and Applied Analysis vol. 12 (2013), 1985-1999 |
