Subnormality and Theory of L-subgroups. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 4, p. 2086–2115, 2022. DOI: 10.29020/nybg.ejpam.v15i4.4548. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4548.. Acesso em: 3 may. 2024.