. F. . F. Alhimdani and E. . S. Al-Ameen, “Effect of Normal Pressure on Drawbar Pull of Tracked Vehicle on Soft Grounds”, J. eng. sustain. dev., vol. 11, no. 1, pp. 70–80, Mar. 2007, Accessed: Apr. 20, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1703