Antonio Iannizzotto, Monica Marras, Nikolaos Papageorgiou, “Constant sign and nodal solutions for nonhomogeneous Robin boundary value problems with asymmetric reactions”, Electron. J. Qual. Theory Differ. Equ., no. 71, 2018, 1
Bin Ge, Zhi-Yuan Chen, “Existence of infinitely many solutions for double phase problem with sign-changing potential”, RACSAM, 113, no. 4, 2019, 3185
Yunru Bai, Leszek Gasiński, Nikolaos S. Papageorgiou, “Nonlinear nonhomogeneous Robin problems with dependence on the gradient”, Bound Value Probl, 2018, no. 1, 2018, 17
Nikolaos S. Papageorgiou, Patrick Winkert, “Singular Dirichlet (p, q)-Equations”, Mediterr. J. Math., 18, no. 4, 2021, 141
Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu, Dušan D. Repovš, “Ground state and nodal solutions for a class of double phase problems”, Z. Angew. Math. Phys., 71, no. 1, 2020, 15
Kimiaki Narukawa, Yukihiro Takajo, “Existence of nonnegative solutions for quasilinear elliptic equations with indefinite critical nonlinearities”, Nonlinear Analysis: Theory, Methods & Applications, 74, no. 16, 2011, 5793
Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu, Dušan D. Repovš, “Nonhomogeneous Hemivariational Inequalities with Indefinite Potential and Robin Boundary Condition”, J Optim Theory Appl, 175, no. 2, 2017, 293
Vladimir Bobkov, Mieko Tanaka, “Generalized Picone inequalities and their applications to (p,q)-Laplace equations”, Open Mathematics, 18, no. 1, 2020, 1030
Weichun Bu, Tianqing An, Guoju Ye, Chengwen Jiao, “Existence Results for p1(x,·) and p2(x,·) Fractional Choquard–Kirchhoff Type Equations with Variable s(x,·)-Order”, Mathematics, 9, no. 16, 2021, 1973
Tran Thi Khieu, Thanh-Hieu Nguyen, “On the fractional P – Q laplace operator with weights”, Applicable Analysis, 103, no. 7, 2024, 1314