On Direct Product of d-Algebras. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 16, n. 2, p. 997–1004, 2023. DOI: 10.29020/nybg.ejpam.v16i2.4738. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4738. Acesso em: 22 dec. 2024.