On Regular Hypersemigroups. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 13, n. 2, p. 346–350, 2020. DOI: 10.29020/nybg.ejpam.v13i2.3703. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3703.. Acesso em: 2 may. 2024.