Anh, Nguyen Tuan, and Trran Thai Son. “HEDGES ALGEBRAS AND PROBLEM FUZZY PARTITION FOR QUALITATIVE ATTRIBUTES”. Journal of Computer Science and Cybernetics 32, no. 4 (August 21, 2017): 335–350. Accessed May 4, 2024. https://vjs.ac.vn/index.php/jcc/article/view/9145.