Vinh, Lê Xuân. “A Method in Linguistic Approximate Reasoning Bases on Non-Homogeneous Hedge Algebras”. Journal of Computer Science and Cybernetics 20, no. 4 (August 1, 2012): 355–367. Accessed November 24, 2024. https://vjs.ac.vn/index.php/jcc/article/view/1904.