1. Greenshields, B.D. (1934) A Study of Traffic Capacity. Highway Research Board, 14, 448-477.
2. On kinematic waves II. A theory of traffic flow on long crowded roads
3. Habermann, R. (1977) Mathematical Models: Mechanical Vibration, Population Dynamics and Traffic Flow. Prentice-Hall, Inc., Englewood Clifts, NJ.
4. On kinematic waves I. Flood movement in long rivers
5. Payne, H.J. (1971) Models of Freeway Traffic and Control. In: Bekey, G.A., Ed., Mathematical Models of Public Systems, Vol. 1, Simulation Council, La Jolla, CA, 51-61.