Al-Jothery, H. K. M., T. M. B. Albarody, P. S. B. M. Yusoff, M. A. Abdullah, A. R. Hussein, and M. F. B. M. Pahmi. “Crashworthiness Design for Trapezoid Origami Crash Structure Numerical”. International Journal of Automotive and Mechanical Engineering, vol. 17, no. 1, Mar. 2020, pp. 7667-74, doi:10.15282/ijame.17.1.2020.14.0569.