Bi-interior Ideal Elements in ∧e-semigroups. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 14, n. 1, p. 43–52, 2021. DOI: 10.29020/nybg.ejpam.v14i1.3931. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3931. Acesso em: 24 nov. 2024.