LONG, N. V.; THÔNG, H. V. Information aggregation problem of 4 tuple linguistic based on hedge algebra. Journal of Computer Science and Cybernetics, [S. l.], v. 27, n. 3, p. 241–252, 2012. DOI: 10.15625/1813-9663/27/3/488. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/488. Acesso em: 7 may. 2024.