TEAM, S. Common Fixed Point Theorems for four mappings in $d^*$ Metric spaces: Shaban Sedghi, Ishak Altun, Nabi Shobe. Thai Journal of Mathematics, [S. l.], v. 7, n. 1, p. 9–19, 2009. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/142. Acesso em: 22 dec. 2024.