WEHRFRITZ, B. A. F. Finitary and Artinian-Finitary Groups over the Integers $ℤ$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 54, n. 6, p. 753–763, 2002. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4113. Acesso em: 5 dec. 2025.