SONGSAENG, M. .; PING SHUM, K. .; CHINRAM, R. .; IAMPAN, A. . Neutrosophic implicative UP-filters, neutrosophic comparative UP-filters, and neutrosophic shift UP-filters of UP-algebras. Neutrosophic Sets and Systems, [S. l.], v. 47, p. 620-643, 2021. Disponível em: http://fs.unm.edu/NSS2/index.php/111/article/view/2025. Acesso em: 4 jun. 2023.