Abed, Salwa Salman, and Shaimia Qais Latif. “Finding Fixed Points for Set-Valued Mappings by Graph Concepts”. Al-Mustansiriyah Journal of Science 31, no. 4 (December 20, 2020): 95–100. Accessed May 8, 2024. https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/894.