Khang, Trần Đình, and Đinh Khắc Dũng. “Fuzzy Resoning With Type-2 Hedge Algebra Based Fuzzy Sets”. <i>Journal of Computer Science and Cybernetics</i> 19, no. 1 (July 26, 2012): 28–43. Accessed January 12, 2026. https://vjes.vast.vn/jcc/article/view/1518.