Wahjono, Hari Boedi, and Fadli Rozaq. “Comparison of the Use of High Speed ​​Diesel and Biosolar Fuels on Exhaust Emissions”. Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) 2, no. 1 (March 20, 2018): 47–55. Accessed June 4, 2026. https://jurnal.ppi.ac.id/jpi/article/view/45.