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/ejpam/article/view/3380. Acesso em: 23 feb. 2026.