salah, aml salah. “Fuzzy Goal An Iterative Goal to Solve Bi-Level Fractional Integer Programming Problem Using Fuzzy Approach: Bi Level Fraction Integer”. IJRDO-Journal of Applied Science 5, no. 1 (January 30, 2019): 13-23. Accessed May 19, 2024. https://www.ijrdo.org/index.php/as/article/view/2602.