K. S. Al-Hachamee, Eyad, and Hussain A. A. Al-Quraishi. 2010. “Penetration Depth Local Effect of Impactors on Concrete Structures”. Journal of Engineering and Sustainable Development 14 (1): 114-21. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1483.