Dinh Phu, Nguyen, and Tran Thanh Tung. “EXISTENCE OF SOLUTIONS OF FUZZY CONTROL DIFFERENTIAL EQUATIONS”. Science and Technology Development Journal 10, no. 5 (May 31, 2007): 5-12. Accessed May 19, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2777.