MR-Metric Spaces: Theory and Applications in Weighted Graphs, Expander Graphs, and Fixed-Point Theorems. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 18, n. 3, p. 6525, 2025. DOI: 10.29020/nybg.ejpam.v18i3.6525. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/6525. Acesso em: 5 dec. 2025.