1. Navigating The Numbers: Greenhouse Gas Data and International Climate Policy;WRI,2005
2. Transport Technologies and Policies for Energy Security and CO2 Reductions;IEA,2003
3. Mobility 2030: Meeting the Challenges to Sustainability;WBCSD,2004
4. Climate Change 2001: The Physical Science Basis – Summary for Policymakers;IPCC,2001
5. Emissions of nitrous oxide and methane from conventional and alternative motor vehicles;Lipman;Climatic Change,2002