TARSIA, A. Differential equations and implicit function: a generalization of the near operators theorem. Topological Methods in Nonlinear Analysis, [S. l.], v. 11, n. 1, p. 115–133, 1998. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1998.007. Acesso em: 25 apr. 2024.