“Effect of Gas Fuel Quality on Combustion Process, Reliability, and Environmental Performance of a Locomotive Gas-Diesel Engine”, ijme, vol. 5, no. 01, pp. 44–55, Dec. 2025, Accessed: Oct. 10, 2026. [Online]. Available: https://www.academicpublishers.org/journals/index.php/ijme/article/view/13764