FIRMANENTI, RELI; NOLIZA BAKAR, NOVA. BEBERAPA OPERASI DAN SIFAT-SIFAT PADA HIMPUNAN LEMBUT KABUR. Jurnal Matematika UNAND, [S. l.], v. 9, n. 1, p. 30–37, 2020. DOI: 10.25077/jmu.9.1.30-37.2020. Disponível em: https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/564. Acesso em: 4 nov. 2026.