Khôi, Lê Hải, and Đặng Xuân Hồng. “A Heuristic Model Based on the Triangular Norms Approach for Expert Systems”. Journal of Computer Science and Cybernetics 19, no. 3 (July 27, 2012): 243–254. Accessed May 3, 2024. https://vjs.ac.vn/index.php/jcc/article/view/1531.