M.Ali, Inaam, and Abdurehman A. Harfash. “On 2-Absorbing Submodules”. Ibn AL-Haitham Journal For Pure and Applied Sciences 28, no. 3 (March 14, 2017): 223–234. Accessed May 1, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/155.