KHOA, N. Đăng. Rough relational database and query optimization techniques. Journal of Computer Science and Cybernetics, [S. l.], v. 19, n. 4, p. 353–358, 2012. DOI: 10.15625/1813-9663/19/4/1543. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1543. Acesso em: 23 nov. 2024.