HIRA, C.; ABDURRAHMAN, S.; THRESYE, T. Sifat-sifat Anti Subgrup Fuzzy. Prosiding Seminar Nasional Matematika dan Pendidikan Matematika, [S. l.], v. 7, p. 301–310, 2022. Disponível em: https://conference.upgris.ac.id/index.php/senatik/article/view/3314. Acesso em: 3 feb. 2026.