Fajrin, Jauhar, Yan Zhuge, Hao Wang, and Frank Bullen. “Experimental and Theoretical Deflections of Hybrid Composite Sandwich Panel under Four-Point Bending Load”. Civil Engineering Dimension 19, no. 1 (March 1, 2017): 29-35. Accessed May 6, 2021. https://ced.petra.ac.id/index.php/civ/article/view/19930.