On Primarily Hollow Module. Journal of Zankoy Sulaimani - Part A, [S. l.], v. 20, n. 3-4, p. 95–104, 2018. DOI: 10.17656/jzs.10738. Disponível em: https://jzs.univsul.edu.iq/index.php/jzs/article/view/jzs-10738.. Acesso em: 18 apr. 2024.