Singh, D., Ahmed, A., Singh, M. and Tomar, S. S. (2013) “A COMMON FIXED POINT THEOREM VIA FAMILY OF R-WEAKLY COMMUTING MAPS”, Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), 5(1), pp. 115–123. available at: https://ph03.tci-thaijo.org/index.php/jnao/article/view/2743 (accessed: 2 September 2026).