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”.
Nahrain University College of Engineering Journal 18 (1): 1-15.
https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/140.