On Weak Graded Rings II. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 12, n. 2, p. 332–347, 2019. DOI: 10.29020/nybg.ejpam.v12i2.3380. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3380.. Acesso em: 27 apr. 2024.