Kurniawan, Ari, Bambang Sudarmanta, and Dori Yuvenda. “The Influence of Air Fuel Ratio on the Performances and Emissions of a SINJAI-150 Bioethanol Fueled Engines”. The International Journal of Mechanical Engineering and Sciences 2, no. 2 (July 9, 2025): 16–22. Accessed August 1, 2026. https://journal.its.ac.id/index.php/jmes/article/view/6424.