Romy, R., Suwitno, S., Ginting, Y.R. and Sembiring, F.E. 2024. Optimization of Injection Pressure and Fuel Temperature in a Diesel Engine Using Biodiesel B40. Jurnal Riset Teknologi Pencegahan Pencemaran Industri. 15, 1 (May 2024), 1–9. DOI:https://doi.org/10.21771/jrtppi.2024.v15.no1.p1-9.