1. The theory of planned behavior;Ajzen;Org. Behav. Hum. Decis. Process.,1991
2. Understanding Attitudes and Predicting Behavior;Ajzen,1980
3. Determinants of people's acceptability of pricing measures: replication and extension of a causal model;Bamberg,2003
4. An unpopular essay on transportation;Black;J. Transp. Geogr.,2001
5. Cambridgeshire County Council, 2003a. Roads and Transport – Cars in Cambridge. http://www.cambridgeshire.gov.uk/sub/eandt/highways/cambridge/cb_car.htm (retrieved 10 March 2003).