Zhu F, Wagner C, Dal Cengio Leonardi A, Jin X, VandeVord P, Chou C, Yang KH, and King AI. Using a gel/plastic surrogate to study the biomechanical response of the head under air shock loading: A combined experimental and numerical investigation. Biomechanics and Modeling in Mechanobiology, 2012, Vol. 11, pp. 341-353.