Khotimah, Siti, Sparisoma Viridi, Widayani Widayani, and Abdul Waris. 2016. “Energy of One-Dimensional Diatomic Elastic Granular Gas:Theory and Molecular Dynamics Simulation”. Indonesian Journal of Physics 22 (3), 103-6. https://doi.org/10.5614/itb.ijp.2011.22.3.5.