DEHGHANI, M.; DAVVAZ, B. On central automorphisms of crossed modules. Carpathian Mathematical Publications, [S. l.], v. 10, n. 2, p. 288–295, 2018. DOI: 10.15330/cmp.10.2.288-295. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1488. Acesso em: 18 apr. 2024.