THỦY, Nguyễn Thanh; HIỆU, Phan Dương. About reasoning operators in knowledge systems of F-rules. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 18, n. 1, 2012. DOI: 10.15625/1813-9663/18/1/2412. Disponível em: https://jcc.vast.vn/jcc/article/view/2412. Acesso em: 4 nov. 2025.