Marchenko, Andrii, and Mykyta Mishchenko. “Improving Efficiency Indicators and Reducing CO2 Emissions by Using Hydrogen and Methane Additives to Gasoline in a Spark-Ignition Engine”. Eastern-European Journal of Enterprise Technologies 2, no. 1 (140) (April 30, 2026): 66–77. Accessed May 7, 2026. https://journals.uran.ua/eejet/article/view/356685.