Mitlif, Rasha Jalal. “Computation the Optimal Solution of Octagonal Fuzzy Numbers”. Journal of Al-Qadisiyah for Computer Science and Mathematics 12, no. 4 (January 8, 2021): Math Page 71– 78. Accessed November 14, 2024. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/727.