AHMAD, M. Z.; HASAN, M. K. A New Approach for Computing Zadeh’s Extension Principle. MATEMATIKA, [S. l.], v. 26, p. 71–81, 2010. DOI: 10.11113/matematika.v26.n.551. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/551. Acesso em: 4 may. 2024.