1. Understanding the effect of transit service reliability in work-travel behavior;Abkowitz;Transpn Res. Rec.,1981
2. Transportation, Temporal, and Spatial Components of Accessibility;Burns,1979
3. An historical review of the gravity and potential concepts of human interaction;Carrothers;Am. Inst. Plan. J.,1956
4. Comparison shopping and the clustering of homogeneous firms;Eaton;J. Reg. Sci.,1979
5. Accessibility for Residents in the Metropolitan Environment;Foley,1972