HỒ, N. C.; VINH, L. X. On some properties of ordering relation in non-homogeneous hedge algebras. Journal of Computer Science and Cybernetics, [S. l.], v. 19, n. 4, p. 373–381, 2012. DOI: 10.15625/1813-9663/19/4/1546. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1546. Acesso em: 10 may. 2024.