E. . K. S. Al-Hachamee and H. . A. A. Al-Quraishi, “Penetration Depth Local Effect of Impactors on Concrete Structures”, J. eng. sustain. dev., vol. 14, no. 1, pp. 114–121, Apr. 2010, Accessed: Jul. 02, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1483