HADI, I. M. A.; HUMOD, Gh. A. Strongly (Comletely) Hollow Submodules I. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 25, n. 3, p. 393–403, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/557. Acesso em: 31 mar. 2025.