SƠN, N. H.; HÙNG, N. V. Translation of relation schemes. Journal of Computer Science and Cybernetics, [S. l.], v. 18, n. 3, p. 285–289, 2012. DOI: 10.15625/1813-9663/18/3/1592. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1592. Acesso em: 12 may. 2024.