Hadi, Inaam Mohammed Ali, and Shukur Neamah Al-Aeashi. “C-Coretractable and Strongly C-Coretractable Modules”. Al-Nahrain Journal of Science, no. 2 (January 10, 2019): 65–72. Accessed May 22, 2026. https://mail.anjs.edu.iq/index.php/anjs/article/view/2056.