A. SALAMA, A.; SMARANDACHE, Florentin. Neutrosophic Crisp Set Theory. Neutrosophic Sets and Systems, [S. l.], v. 5, p. 27–35, 2014. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/537.. Acesso em: 23 nov. 2024.