TRUNG, P. Q. Some problems for join dependency and project-join normal form. Journal of Computer Science and Cybernetics, [S. l.], v. 17, n. 1, p. 89–96, 2012. DOI: 10.15625/1813-9663/17/1/2435. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/2435. Acesso em: 10 may. 2024.