Radu Chiriac, Nicolae Apostolescu - Emissions of a diesel engine using B20 and effects of hydrogen addition - International Journal of Hydrogen Energy, Volume 38, Issue 30, 8 October 2013, Pages 13453-13462.
 Duraid F. Maki, P. Prabhakaran - An Experimental Investigation on Performance and Emissions of a Multi Cylinder Diesel Engine Fueled with Hydrogen - Diesel Blends - World Renewable Energy Congress 2011 - Sweden.;
 Ali Can Yilmaz, Erinc¸ Uludamar, Kadir Aydin - Effect of hydroxy (HHO) gas addition on performance and exhaust emissions in compression ignition engines - International Journal of Hydrogen Energy XXX 2010 (1-7).
 Cui K.R., Gao X.H., Timoshevsky BG, Sirota A.A., Belykov S.U. - Research on reducing fuel consumption by adding hydrogen into diesel engines - Journal of Wuhan University of Water Transportation Engineering 1992;16(3):253e9.
 Zhang B, Fu WB, Wu XH - Effect of hydrogen on fuel consumption of diesel engine - Journal of Combustion Science and Technology 2006;12(3):238e42.
 Song YC - Study on fuel-air mixture forming and combustion process in hydrogen-diesel engine of premixed charge compression ignition - Dissertation for degree, Beijing: Beijing Jiaotong University, 2008.
 Lee Schipper - Fuel Economy Trends in Industrialized Countries When the Rubber Hits the Road Sneak Preview of a Spring '09 Course.