Senapati, Tanusri, and Lakshmi Kanta Dey. “An Essential Remark on Relation-Theoretic Metrical Fixed Point Results”. Communications in Mathematics and Applications 9, no. 2 (June 30, 2018): 93–101. Accessed May 3, 2024. http://www.rgnpublications.com/journals/index.php/cma/article/view/628.