1. EU CO2 Emission standards for passenger cars and light-commercial vehicles, Policy Update. International Council on Clean Transportation. 〈http://www.theicct.org/sites/default/files/publications/ICCTupdate_EU-95gram_jan2014.pdf〉; January 2014 [accessed 03.0315].
2. Assessment of maximum available work of a hydrogen fueled compression ignition engine using exergy analysis;Chintala;Energy,2014
3. Regulations and Standards: Light-Duty (Transportation and Climate). US Environmental Protection Agency. 〈http://www3.epa.gov/otaq/climate/regs-light-duty.htm〉 [accessed 03.03.15].
4. Vehicle emission tests: beyond the VW case. European Parliamentary Research Service (EPRS). 〈http://www.europarl.europa.eu/RegData/etudes/ATAG/2015/568355/EPRS_ATA(2015)568355_EN.pdf〉; October 2015 [accessed 12.06.15].
5. An overview of hydrogen as a vehicle fuel;Fayaz;Renew Sustain Energy Rev,2012