Khang, Trần Đình, and Đinh Khắc Dũng. “Fuzzy Resoning With Type-2 Hedge Algebra Based Fuzzy Sets”. Journal of Computer Science and Cybernetics 19, no. 1 (July 26, 2012): 28–43. Accessed November 4, 2025. https://jcc.vast.vn/jcc/article/view/1518.