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2. J. O. Hinze,Turbulence(McGraw-Hill, New York, 1959), p. 354.
3. H. Lamb,Hydrodynamics(Dover, New York, 1945), p. 609.
4. H. Schlichting,Boundary Layer Theory(McGraw-Hill, New York, 1960), p. 187.
5. J. Trapp (private communication).