THI, V. D.; SON, N. H. Antikey and minimal keys of relation schemes. Journal of Computer Science and Cybernetics, [S. l.], v. 21, n. 4, p. 337–342, 2012. DOI: 10.15625/1813-9663/21/4/1437. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1437. Acesso em: 27 apr. 2024.