MEKONNEN SHALLA, M. .; OLGUN, N. . Direct and Semi-Direct Product of Neutrosophic Extended Triplet Group. Neutrosophic Sets and Systems, [S. l.], v. 29, p. 197-214, 2019. Disponível em: https://fs.unm.edu/NSS2/index.php/111/article/view/229. Acesso em: 30 sep. 2023.