Dubey, Anil Kumar, and Manjula Tripathi. “Common Fixed Point Theorem in Complex Valued $b$-Metric Space for Rational Contractions”. Journal of Informatics and Mathematical Sciences 7, no. 3 (December 31, 2015): 149–161. Accessed April 29, 2024. https://www.rgnpublications.com/journals/index.php/jims/article/view/305.