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1. Nonlinear, nonhomogeneous Robin problems with indefinite potential and general reaction Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2020, original scientific article Keywords: nonhomogeneous differential operator, nonlinear regularity theory, constant sign and nodal solutions, infinitely many nodal solutions, critical groups |
2. Infinitely many sign-changing solutions for Kirchhoff type problems in R[sup]3 Jijiang Sun, Lin Li, Matija Cencelj, Boštjan Gabrovšek, 2019, original scientific article Keywords: infinitely many sign-changing solutions, Kirchhoff type problems, invariant sets, descending flow |