Fajrin, J., Y. Zhuge, F. Bullen, and H. Wang. “Flexural Behaviour of Hybrid Sandwich Panel With Natural Fiber Composites As the Intermediate Layer”. Journal of Mechanical Engineering and Sciences, vol. 10, no. 2, June 2016, pp. 1968-83, doi:10.15282/jmes.10.2.2016.3.0187.