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2. Travel behaviour of car users during the UK fuel crisis and insights into car dependence;Chatterjee,2002
3. Commission for Integrated Transport, 2002, Fact Sheet No.13: Public subsidy for the bus industry, http://www.cfit.gov.uk/factsheets/13/.
4. Delucchi, et al., 2000. Electric and gasoline vehicle lifecycle cost and energy-use model. Paper UCD-ITS-RR-99-4, Institute of Transportation Studies. University of California, Davis.
5. The effect of the fuel crisis on sections of the English Motorway Network;Eves,2002