ABU-SALEEM, M. A neutrosophic folding on a neutrosophic fundamental group. Neutrosophic Sets and Systems, [S. l.], v. 46, p. 290–299, 2021. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/1960.. Acesso em: 24 jun. 2025.