1. New Approaches to Understanding Travel Behavior;Allaman,1982
2. Deriving the constancy of traffic flow composition from vehicle registration data;Bonsall;Traffic Eng. Control,1984
3. 1971 Repeat survey of travel in the Reading area;Downes,1974
4. Travel behavior—A synthesized theory;Fried;Project 8–14 Final Report,1977
5. Repetition and variability in urban travel;Huff;Geogr. Anal.,1986