PAPAGEORGIOU, N. S.; SMYRLIS, G. Positive solutions for nonlinear nonhomogeneous parametric equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 46, n. 1, p. 1–15, 2015. DOI: 10.12775/TMNA.2015.033. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.033. Acesso em: 22 jul. 2024.