Unique Common Fixed Points for Two Weakly $C^*$-Contractive Mappings on Partially Ordered 2-Metric Spaces. Communications in Mathematical Research, [S. l.], v. 34, n. 1, p. 77–88, 2020. DOI: 10.13447/j.1674-5647.2018.01.08. Disponível em: https://global-sci.com/index.php/cmr/article/view/8952. Acesso em: 26 feb. 2026.