Babu, G.V.R., and K.T. Kidane. “COMMON FIXED POINT THEOREMS FOR TWO PAIRS OF SELFMAPS SATISFYING GENERALIZED WEAK CONTRACTIVE CONDITION”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 4, no. 1 (May 22, 2013): 13–28. accessed September 2, 2026. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2681.