Khotimah, S., S. Viridi, W. Widayani, and A. Waris. “Energy of One-Dimensional Diatomic Elastic Granular Gas:Theory and Molecular Dynamics Simulation”. Indonesian Journal of Physics, Vol. 22, no. 3, Nov. 2016, pp. 103-6, doi:10.5614/itb.ijp.2011.22.3.5.