THI, V. Đức. On the minimal family. Journal of Computer Science and Cybernetics, [S. l.], v. 17, n. 3, p. 48–52, 2012. DOI: 10.15625/1813-9663/17/3/2625. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/2625. Acesso em: 23 nov. 2024.