SHELAH, S. NÉ´-free abelian group with no non-zero homomorphism to ℤ. CUBO, A Mathematical Journal, [S. l.], v. 9, n. 2, p. 59–79, 2007. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1592. Acesso em: 18 may. 2024.