P ARULPANDY; PRICILLA, M. T. . Bipolar neutrosophic graded soft sets and their topological spaces. Neutrosophic Sets and Systems, [S. l.], v. 48, p. 386-398, 2022. Disponível em: http://fs.unm.edu/NSS2/index.php/111/article/view/2112. Acesso em: 10 aug. 2022.