1. The GLIM system. Release 3: General Linear Interactive Modelling;Baker,1978
2. Urban public transport subsidies: an economic assessment of value for money;Department of Transport;Technical Report, ECLRT 32T,1982
3. Fares and Road Casualties in London;Greater London Council,1983
4. Variations in 2-vehicle accident frequencies 1970–1978;Scott;Departments of the Environment and Transport TRRL Report LR 1086,1983