Murachman, Bardi, Sarjono Sarjono, Fauzan Afandi, and Johan Khaeri. “Optimization Study of the Solid Propellant (Rocket Fuel) Based on Extracted Bitumen of Indonesian Natural Buton Asphalt”. ASEAN Journal of Chemical Engineering 13, no. 2 (December 31, 2013): 57-72. Accessed November 24, 2024. https://journal.ugm.ac.id/v3/AJChE/article/view/8160.