ALI, Mumtaz; SMARANDACHE, Florentin; SHABIR, Muhammad. Soft Neutrosophic Groupoids and Their Generalization. Neutrosophic Sets and Systems, [S. l.], v. 6, p. 61–80, 2014. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/589.. Acesso em: 12 feb. 2025.