BIJAN DAVVAZ; IMAM MUKHLASH; SOLEHA2. Himpunan Fuzzy dan Rough Sets. Limits: Journal of Mathematics and Its Applications, [S. l.], v. 18, n. 1, p. 79–94, 2021. Disponível em: https://journal.its.ac.id/index.php/limits/article/view/5388. Acesso em: 6 dec. 2025.