GOEBEL, K. Properties of minimal invariant sets for nonexpansive mappings. Topological Methods in Nonlinear Analysis, [S. l.], v. 12, n. 2, p. 367–373, 1998. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1998.046. Acesso em: 22 jul. 2024.