K. S. Al-Hachamee E, A. A. Al-Quraishi H. Penetration Depth Local Effect of Impactors on Concrete Structures. J. eng. sustain. dev. 2010;14(1):114-121. Accessed April 19, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1483