Dedi Nurdiansyah, Sudjito Soeparman, and Eko Siswanto. 2021. “Comparative Study of Combustible Species for 4-Stroke Otto Cycle Combustion Motor and 6-Stroke MUB-2 Cycle Combustion Motor With Fuel Pertamax”. Procedia of Engineering and Life Science 1 (2). https://doi.org/10.21070/pels.v1i2.1013.