VEERAPPAN, Chinnadurai; A, Arulselvam. Pythagorean Neutrosophic Ideals in Semigroups. Neutrosophic Sets and Systems, [S. l.], v. 41, p. 258–269, 2021. Disponível em: https://fs.unm.edu/nss8/index.php/111/article/view/818.. Acesso em: 12 nov. 2024.