Sơn, Trần Thái, and Nguyễn Cát Hồ. “Hedge Algebraic Approach in Construction the Language Scale for Assessment”. Journal of Computer Science and Cybernetics 28, no. 3 (November 8, 2012): 260–273. Accessed November 5, 2025. https://jcc.vast.vn/jcc/article/view/1266.