Ma, Q., M. M. Rejab, S. Kang, M. Idris, and M. M.Zin. “The Energy-Absorbing Characteristics of Single Spherical-Roof Contoured-Core (SRCC) Cell With Composite Materials”. International Journal of Automotive and Mechanical Engineering, vol. 17, no. 4, Dec. 2020, pp. 8265 -, doi:10.15282/ijame.17.4.2020.04.0624.