NGUYEN, H. An Extended Type-2 Fuzzy Relational Database Model for Aggregate and Grouping Operations. Malaysian Journal of Science and Advanced Technology, [S. l.], v. 3, n. 3, p. 150–157, 2023. DOI: 10.56532/mjsat.v3i3.169. Disponível em: http://mjsat.com.my/index.php/mjsat/article/view/169. Acesso em: 18 mar. 2025.