1. G. K. Batchelor,An Introduction to Fluid Dynamics(Cambridge U.P., London, 1967).
2. H. Lamb,Hydrodynamics(Dover, New York, 1932), 6th ed.
3. A. Sommerfeld,Lehrbuch der Theoretischen Physik(Vieweg, Braunschweig, 1932), Vol. 2, Chap. 4.
4. A. J. Lichtenberg and M. A. Lieberman,Regular and Stochastic Motion(Springer, New York, 1983).