THUAN, H.; BAO, L. V. Translations of relation schemes. Journal of Computer Science and Cybernetics, [S. l.], v. 1, n. 1, p. 27–32, 2015. DOI: 10.15625/1813-9663/1/1/6664. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/6664. Acesso em: 13 may. 2024.