Santoso, Dany. “How To Measure Knocking Intensity In Dual-Fuel Internal Combustion Engines : A Review”. International Journal of Marine Engineering Innovation and Research 10, no. 1 (July 10, 2025): 221–229. Accessed January 27, 2026. https://journal.its.ac.id/index.php/ijmeir/article/view/4765.