Ahmed A. Alharbi, et al. “A Comprehensive Experimental Study on NOx Emissions and Fuel Consumption for SI Engine Fuelled With a Mixture of Gasoline, Hydrogen-Rich Synthesis Gas and Hydrous Ethanol”. Technological Innovation in Engineering Research Vol. 6, July 2022, pp. 7-62, doi:10.9734/bpi/tier/v6/16722D.