LỘC, V. M. An expression for measyring the degree of the truth of inclusion with interval-valued fuzzy sets and application to resoning based on fuzzy sets. Journal of Computer Science and Cybernetics, [S. l.], v. 18, n. 2, p. 141–149, 2012. DOI: 10.15625/1813-9663/18/2/1600. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1600. Acesso em: 2 may. 2024.