1. Restraint of traffic in congested areas;Beesley;The Town Planning Rev.,1962
2. A statistical analysis of speed density hypotheses;Drake;Highway Res. Record,1967
3. Freeway level of service as influenced by volume and capacity characteristics;Drew;Highway Res. Record,1965
4. The Machinery of Freedom;Friedman,1973
5. An analysis of traffic flow;Greenberg;Operations Res.,1959