MIKLASZEWSKI, D. A fixed point theorem for multivalued mappings with nonacyclic values. Topological Methods in Nonlinear Analysis, [S. l.], v. 17, n. 1, p. 125–131, 2001. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2001.008. Acesso em: 26 apr. 2024.