THI, V. Đức. Armstrong relations and strong dependencies. Journal of Computer Science and Cybernetics, [S. l.], v. 13, n. 3, p. 89–93, 2016. DOI: 10.15625/1813-9663/13/3/8001. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/8001. Acesso em: 4 may. 2024.