Syarifudin, Syarifudin, et al. “The Effect of Ethanol on Brake Torque, Brake Specific Fuel Consumption, Smoke Opacity, and Exhaust Gas Temperature of Diesel Engine 4JB1 Fueled by Diesel-Jatropha Oil”. Automotive Experiences, vol. 5, no. 2, Apr. 2022, pp. 230-7, https://doi.org/10.31603/ae.6447.