KHOA, Nguyễn Đăng. Rough sets approach in knowledge data base discovery. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 18, n. 4, p. 309–316, 2012. DOI: 10.15625/1813-9663/18/4/1567. Disponível em: https://jcc.vast.vn/jcc/article/view/1567. Acesso em: 4 nov. 2025.