Ethar A. Abd-al hussein and Ayed E. Hashoosh. “Improved Approaches for Common Fixed Points in Bi-S-Metric Spaces ”. Journal of Computational Analysis and Applications (JoCAAA), vol. 34, no. 2, Feb. 2025, pp. 1-11, https://eudoxuspress.com/index.php/pub/article/view/1850.