Hariyanto, Arief, Wiranto Arismunandar, and Gerard George Engel. “EFFECTS OF HYDROGEN ADDITION INTO INTAKE AIR ON THE HYDROCARBON EMISSION OF GASOLINE ENGINES AT COLD START CONDITION”. Mesin 22, no. 2 (May 15, 2017): 69-72. Accessed February 9, 2026. https://journals.itb.ac.id/index.php/jtms/article/view/4982.