Daniel John Piekarski, James H. Lee, Robert D. Garrick, Andrew Smith, Kenneth E. Krapf and John Bulzacchelli. Study of the Performance and Emissions of a Methane Fueled V-Twin Four Stroke Spark Ignited Engine. NUPSR-V15 [Internet]. 2021 Aug. 24 [cited 2026 Jun. 4];:133-44. Available from: https://stm.bookpi.org/NUPSR-V15/article/view/3484