Alves, Claudianor O., Renan J. S. Isneri, and Piero Montecchiari. 2023. “Existence of Saddle-Type Solutions for a Class of Quasilinear Problems in R^2”. Topological Methods in Nonlinear Analysis 61 (2):825-68. https://doi.org/10.12775/TMNA.2022.039.