Ibrahim, M. N., U. I. Samian, K.-A. Kamarudin, A. E. Ismail, S. Jamian, M. K. Mohd Nor, M. K. Awang, and W. Adi Siswanto. “Investigation on Dynamics Characteristic of Multilayer Steel Plate Impacted by Projectile”. International Journal of Integrated Engineering, Vol. 11, no. 7, Nov. 2019, pp. 129-36, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/5070.