Ali Hadi , Inaam Mohammed, and Shukur Neamah Al-aeashi. “Strongly Coretractable Modules and Some Related Concepts”. JOURNAL OF ADVANCES IN MATHEMATICS 12, no. 12 (October 2, 2017): 6881–6888. Accessed November 21, 2024. https://rajpub.com/index.php/jam/article/view/8564.