1. A network analysis of airport accessibility in south Hampshire;Armstrong;J. Trans. Econ. Policy,1972
2. Towards Measures of Spatial Opportunity: Progress in Planning;Breheny,1974
3. A spatial model of urban stock and activity;Echenique;Reg. Stud.,1969
4. Mapping Accessibility;Forbes,1964
5. Spatial Interaction Models: Formulations and Applications;Fotheringham,1989