HÀO, N. C.; LÊ, T. T. M. Fuzzy object-oriented databases model with hedge algebra based semantics. Journal of Computer Science and Cybernetics, [S. l.], v. 28, n. 3, p. 284–296, 2012. DOI: 10.15625/1813-9663/28/3/2608. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/2608. Acesso em: 6 may. 2024.