NYKYFORCHYN, Kh.O. Conditional operations on fuzzy numbers. Carpathian Mathematical Publications, [S. l.], v. 5, n. 1, p. 110–113, 2013. DOI: 10.15330/cmp.5.1.110-113. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/3658. Acesso em: 4 may. 2024.