Ramadan Mehdi, Akeel, and Dhuha Taima Adb Al-Kadhim. “Injective Modules Relative To a Preradical”. Al-Qadisiyah Journal of Pure Science 21, no. 3 (July 8, 2017): 1-15. Accessed May 16, 2024. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/33.