CƯỜNG, B. C.; ANH, T. H.; HẢI, B. D. Some operations on type-2 intuitionistic fuzzy sets. Journal of Computer Science and Cybernetics, [S. l.], v. 28, n. 3, p. 274–283, 2012. DOI: 10.15625/1813-9663/28/3/2607. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/2607. Acesso em: 28 apr. 2024.