Ahmad Zaidi, Ahmad Mujahid, Goh Ling Lang, and Ahmad Firdaus Ahmad Zaidi. 2010. “Numerical Simulation Study on Lateral Collapse of Kenaf-Foam Composite Filled in Cylindrical Tube Subjected to Dynamic Loading”. Journal of Science and Technology 2 (1). https://penerbit.uthm.edu.my/ojs/index.php/JST/article/view/237.