COUCHOURON, J.-F.; PRECUP, R. Homotopy method for positive solutions of $p$-Laplace inclusions. Topological Methods in Nonlinear Analysis, [S. l.], v. 30, n. 1, p. 157–169, 2007. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2007.023. Acesso em: 16 apr. 2024.