Ahmed, Ghaleb, and Ghaleb Ahmed. “Coclosed Rickart Modules”. Ibn AL-Haitham Journal For Pure and Applied Sciences 2017, no. IHSCICONF (April 25, 2018): 452–462. Accessed May 1, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/1818.