Ly, H. A., and T. Thai Quang. “Behavior of Sandwich Tubular-Hat Sections With Aluminum Foam Filler Subjected to Low Velocity Impact Load”. Journal of Engineering and Technological Sciences, vol. 49, no. 1, Apr. 2017, pp. 144-62, doi:10.5614/j.eng.technol.sci.2017.49.1.9.