Rathee, Savita, and Neelam Kumari. “Triple Invariant Point Theorems With PPF Dependence for Contractive Type Mappings”. Communications in Mathematics and Applications 13, no. 3 (November 29, 2022): 1047–1059. Accessed May 20, 2024. https://www.rgnpublications.com/journals/index.php/cma/article/view/1775.