HỒ, Nguyễn Cát; VINH, Lê Xuân. On some properties of ordering relation in non-homogeneous hedge algebras. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 19, n. 4, p. 373–381, 2012. DOI: 10.15625/1813-9663/19/4/1546. Disponível em: https://vjes.vast.vn/jcc/article/view/1546. Acesso em: 12 jan. 2026.