BONANNO, G.; MARANO, S. A. Positive solutions of elliptic equations with discontinuous nonlinearities. Topological Methods in Nonlinear Analysis, [S. l.], v. 8, n. 2, p. 263–273, 1996. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1996.032. Acesso em: 27 apr. 2024.