Muayyad Mahmood Khalil. A SINGLE MUTUAL FIXED POINT THEOREM USING Փ- CONTRACTION IN PARTIAL –b– METRIC SPACES. Tikrit J. Pure Sci. [Internet]. 2023 Jan. 30 [cited 2024 Jul. 3];22(6):140-3. Available from: https://tjps.tu.edu.iq/index.php/tjps/article/view/802