D. Mahmood, Raida, حسام, Husam Q. Mohammad, and رائدة. “On Generalized Simple Singular AP-Injective Rings”. AL-Rafidain Journal of Computer Sciences and Mathematics 9, no. 1 (June 25, 2025): 175–180. Accessed August 3, 2025. https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19683.