Supadmana Muda, Nur Rachman, I.N.G. Wardana, Nurkholis Hamidi, Lilis Yuliati, and Gunawan Witjaksono. 2018. “Electron Spins Coupling of Coconut Shell Activated Nanocarbons in Solid Propellant on Improving to the Thrust Stability and Specific Impulses”. Journal of Mechanical Engineering and Sciences 12 (4):4001-17. https://doi.org/10.15282/jmes.12.4.2018.02.0348.