K. PORSELVI; B. ELAVARASAN; FLORENTIN SMARANDACHE; Y. B. JUN. Neutrosophic ℵ −bi-ideals in semigroups. Neutrosophic Sets and Systems, [S. l.], v. 35, p. 422–434, 2024. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/4011.. Acesso em: 16 mar. 2025.