CƯỜNG, Bùi Công; ANH, Tống Hòang; HẢI, Bùi Dương. Some operations on type-2 intuitionistic fuzzy sets. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 28, n. 3, p. 274–283, 2012. DOI: 10.15625/1813-9663/28/3/2607. Disponível em: https://vjs.ac.vn/jcc/article/view/2607. Acesso em: 5 dec. 2025.