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2. M. J. Lighthill and G. B. Whitham, ibid
229, 317 (1955).
3. R. Haberman, Mathematical Models in Mechanical Vibrations, Population Dynamics, and Traffic Flow ( Prentice-Hall, Englewood Cliffs, NJ, 1977 ).
4. I. Prigogine and R. Herman, Kinetic Theory of Vehicular Traffic ( Elsevier, New York, 1971 ).
5. S. L. Paveri-Fontana, Transp. Res. 9, 225 (1975).