MAWHIN, J. Leray-Schauder continuation theorems in the absence of a priori bounds. Topological Methods in Nonlinear Analysis, [S. l.], v. 9, n. 1, p. 179–200, 1997. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1997.008. Acesso em: 3 jul. 2024.