Siddeg, Abu Bakar, et al. “Analysis of The Influences of Biodiesel On Performance and Emissions of a Diesel Engine ”. Journal of Automotive Powertrain and Transportation Technology, vol. 2, no. 2, Jan. 2023, pp. 1-8, https://publisher.uthm.edu.my/ojs/index.php/japtt/article/view/13275.