Hồ, Nguyễn Cát, and Huỳnh Văn Nam. “Lattice Character of the Refinement Structure of Hedge Algebras”. <i>Journal of Computer Science and Cybernetics</i> 12, no. 1 (April 3, 2016): 7–20. Accessed November 4, 2025. https://jcc.vast.vn/jcc/article/view/8041.