QUẾ, Trần Đình. Probabilistic reasoning based on layers of knowledge base. Journal of Computer Science and Cybernetics, [S. l.], v. 17, n. 2, p. 27–34, 2012. DOI: 10.15625/1813-9663/17/2/2440. Disponível em: https://jcc.vast.vn/jcc/article/view/2440. Acesso em: 5 nov. 2025.