Fixed point theorem for generalized contractions satisfying rational type expressions in partially ordered metric spaces. Gulf Journal of Mathematics, [S. l.], v. 2, n. 4, 2014. DOI: 10.56947/gjom.v2i4.211. Disponível em: https://www.gjom.org/index.php/gjom/article/view/211. Acesso em: 20 aug. 2026.