Babu, G.V.R., and G.N. Alemayehu. “Existence of Common Fixed Points via Modified Mann Iteration in Convex Metric Spaces and an Invariant Approximation Result”. Tamkang Journal of Mathematics 41, no. 4 (December 1, 2010): 335–348. Accessed May 2, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/785.