P. AYESHA PARVEEN; M. HIMAYA JALEELA BEGUM. Neutrosophic Doubt Fuzzy Bi-ideal of BS-Algebras . Neutrosophic Sets and Systems, [S. l.], v. 65, p. 101–109, 2024. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/4299.. Acesso em: 7 oct. 2026.