Muayyad Mahmood Khalil. “A SINGLE MUTUAL FIXED POINT THEOREM USING Փ- CONTRACTION IN PARTIAL –b– METRIC SPACES”. Tikrit Journal of Pure Science 22, no. 6 (January 30, 2023): 140–143. Accessed June 18, 2025. https://tjpsj.org/index.php/tjps/article/view/802.