PAPAGEORGIOU, N. S.; RADULESCU, V. D. Solutions with sign information for nonlinear nonhomogeneous elliptic equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 45, n. 2, p. 575–600, 2015. DOI: 10.12775/TMNA.2015.027. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.027. Acesso em: 18 apr. 2024.