Hadi, I. M.A. and Aidi, S.H. (2017) “δ-Hollow Modules”, Ibn AL-Haitham Journal For Pure and Applied Sciences, 27(2), pp. 241–250. Available at: https://jih.uobaghdad.edu.iq/index.php/j/article/view/348 (Accessed: 29 March 2025).