1. Urban fields;Angel,1976
2. The economics of traffic congestion;Arnott;American Scientist,1994
3. Some circumstances in which vehicles will reach their destinations earlier by starting later: revisited;Ben-Akiva;Transportation Science,1986
4. The battle of images; cultural conceptions of different transport modes in Oslo;Berge,1994
5. Road versus rail: the Mogridge conjecture;Bly,1993