Team S. Common Fixed Point Theorems for four mappings in $d^*$ Metric spaces: Shaban Sedghi, Ishak Altun, Nabi Shobe. Thai J Math [Internet]. 2009 Jun. 1 [cited 2024 Dec. 22];7(1):9-19. Available from: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/142