JAFARPOUR, M.; AGHABOZORGI, H.; DAVVAZ, B. ON DERIVED OF SOME POLYGROUPS AND GENERALIZED ALTERNATIVE POLYGROUPS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 37, p. 8–17, 2017. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6839. Acesso em: 26 sep. 2026.