R. I. Khalel, N. S. Mohammed, S. B. Shukur, and K. F. Sarsam, “Flexure Revisited: Strength of Singly Reinforced Beams- A Simple Approach”, NUCEJ, vol. 18, no. 1, pp. 1–15, Jan. 2015, Accessed: Apr. 12, 2025. [Online]. Available: https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/140