KARAKOSTAS, George L. An extension of Krasnoselskii’s fixed point theorem for contractions and compact mappings. Topological Methods in Nonlinear Analysis, [S. l.], v. 22, n. 1, p. 181–191, 2003. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2003.035. Acesso em: 8 jul. 2025.