ABBAS, M.; CHANDOK, S.; KHAN, M. S. Common Fixed-Point Theorems for Nonlinear Weakly Contractive Mappings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 4, p. 531–537, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2155. Acesso em: 5 dec. 2025.