Khôi, Lê Hải, and Lê Quý Sơn. “A Heuristic-Model Based on the Bounds Propagation Approach for Expert Systems”. Journal of Computer Science and Cybernetics 20, no. 1 (July 25, 2012): 31–41. Accessed November 5, 2025. https://jcc.vast.vn/jcc/article/view/1455.