Khalel, Raid I., Nisreen S Mohammed, Sameh B.T. Shukur, and Kaiss F. Sarsam. 2015. “Flexure Revisited: Strength of Singly Reinforced Beams- A Simple Approach”. Al-Nahrain Journal for Engineering Sciences 18 (1): 1-15. https://nahje.com/index.php/main/article/view/140.