Khoa, Nguyễn Đăng, and Vũ Huy Hoàng. “The Generalized Functional Dependencies Based on Rough Sets Theory”. Journal of Computer Science and Cybernetics 20, no. 1 (July 25, 2012): 91–100. Accessed May 2, 2024. https://vjs.ac.vn/index.php/jcc/article/view/1462.