An Application of le-semigroup Techniques to Semigroups, Γ-semigroups and to Hypersemigroups. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 12, n. 1, p. 208–225, 2019. DOI: 10.29020/nybg.ejpam.v12i1.3383. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3383.. Acesso em: 3 may. 2024.