Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu, “Nonlinear Nonhomogeneous Robin Problems with Superlinear Reaction Term”, Advanced Nonlinear Studies, 16, no. 4, 2016, 737
Gongbao Li, Xiaoyan Liang, “The existence of nontrivial solutions to nonlinear elliptic equation of –-Laplacian type on”, Nonlinear Analysis: Theory, Methods & Applications, 71, no. 5-6, 2009, 2316
Shouchuan Hu, Nikolaos S. Papageorgiou, “Nonlinear Dirichlet problems with a crossing reaction”, CPAA, 13, no. 6, 2014, 2749
Luiz F. O. Faria, Olímpio H. Miyagaki, Dumitru Motreanu, “Comparison and Positive Solutions for Problems with the (p, q)-Laplacian and a Convection Term”, Proceedings of the Edinburgh Mathematical Society, 57, no. 3, 2014, 687
Pasquale Candito, Leszek Gasiński, Roberto Livrea, “Three solutions for parametric problems with nonhomogeneous (a,2)-type differential operators and reaction terms sublinear at zero”, Journal of Mathematical Analysis and Applications, 480, no. 1, 2019, 123398
Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu, Dušan D. Repovš, “Nonlinear nonhomogeneous singular problems”, Calc. Var., 59, no. 1, 2020, 9
Zhenhai Liu, Nikolaos S. Papageorgiou, “Anisotropic (p, q)-equations with competition phenomena”, Acta Math Sci, 42, no. 1, 2022, 299
Li Wang, Jun Wang, Daoguo Zhou, “Concentration of solutions for double-phase problems with a general nonlinearity”, MATH, 8, no. 6, 2023, 13593
Divya Goel, Deepak Kumar, K. Sreenadh, “Regularity and multiplicity results for fractional (p,q)-Laplacian equations”, Commun. Contemp. Math., 22, no. 08, 2020, 1950065
N. S. Papageorgiou, C. Vetro, F. Vetro, “(p,2)-equations resonant at any variational eigenvalue”, Complex Variables and Elliptic Equations, 65, no. 7, 2020, 1077