Le, Tung Thanh, and Tam Hoang Dang. “Necessary and Sufficient Optimality Conditions for Semi-Infinite Programming With Multiple Fuzzy-Valued Objective Functions”. Statistics, Optimization & Information Computing 10, no. 2 (January 7, 2022): 410-425. Accessed May 27, 2024. http://www.iapress.org/index.php/soic/article/view/1088.