H. C. W. L. Williams

• On the formation of travel demand models and economic evaluation measures of user benefit
• A retail location model with overlapping market areas
• Accessibility, spatial interaction and the evaluation of land use-transportation plans
• Behavioural theories of dispersion and the mis-specification of travel demand models
• Behavioural travel theories, model specification and the response error problem
• Dynamic models for urban and regional analysis
• Mathematical programming approaches to activity location
• Model based transport policy assessment
• On the evaluation of a mixed mode transportation system
• Random utility theory and the structure of travel choice models
• Some generalisations and applications of the velocity field concept
• Some generalizations and applications of the velocity field concept