KHÔI, Lê Hải. A heuristic model based on the certainty factor approach for the expert system. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 17, n. 3, p. 15–24, 2012. DOI: 10.15625/1813-9663/17/3/2621. Disponível em: https://jcc.vast.vn/jcc/article/view/2621. Acesso em: 5 nov. 2025.