SHIMIZU, T.; TAKAHASHI, W. Fixed points of multivalued mappings in certain convex metric spaces. Topological Methods in Nonlinear Analysis, [S. l.], v. 8, n. 1, p. 197–203, 1996. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1996.028. Acesso em: 22 jul. 2024.