Team, S. (2009) “Common Fixed Point Theorems for four mappings in $d^*$ Metric spaces: Shaban Sedghi, Ishak Altun, Nabi Shobe”, Thai Journal of Mathematics, 7(1), pp. 9–19. Available at: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/142 (Accessed: 22 December 2024).