1. International Energy Agency (2009) Transport, energy, and CO2.
http://www.iea.org/textbase/nppdf/free/2009/transport2009.pdf
2. The International Bank for Reconstruction and Development/The World (2010) Cities and climate change: an urgent agenda, vol 10, December 2010
3. China’s private car ownership tops 10 million.
http://www.china.org.cn/english/BAT/67018.htm
4. Schifferes S (2007) Cracking China’s market, BBC News, 17 May 2007.
http://news.bbc.co.uk/1/hi/business/6658583.stm
5. Economist (2011) Life in the slow lane, 28 April 2011.
http://www.economist.com/node/18620944?story_id=18620944