Kiran, V., and J. Niranjan Goud. “A Common Fixed Point Theorem for Two Compatible Self-Maps of a \(S\)-Metric Space”. Communications in Mathematics and Applications 13, no. 2 (August 17, 2022): 711–715. Accessed April 7, 2025. http://rgnpublications.com/journals/index.php/cma/article/view/1832.