Kumam, Poom, Muhammad Sarwar, and ZadaMian Bahadur. 2016. “Fixed Point Results Satisfying Rational Type Contractive Conditions in Complex Valued Metric Spaces”. Annales Mathematicae Silesianae 30 (September), 89-110. https://journals.us.edu.pl/index.php/AMSIL/article/view/13958.