REFERENCES
- Henke , R. W. 1966 . Introduction to Fluid Mechanics , Reading, Mass. : Addison‐Wesley . Chaps.1‐10
- Lighthill , M. J. and Whitham , G. B. 1955 . Proc. Roy. Soc 281 – 345 . A229
- Ashton , W. D. 1966 . The Theory of Traffic Flow , London : Methuen . Chap. 4