AbbasM., Chandok S., and KhanM. S. “Common Fixed-Point Theorems for Nonlinear Weakly Contractive Mappings”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 4 (April 25, 2014): 531–537. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2155.