1. ^iepmann, H. W., and Roshko, A., Elements of Gasdynamics, Wiley, New York, 1957, pp.84-93.
2. 2Anderson, J. D., Jr., Fundamentals of Aerodynamics, McGraw-Hill, New York, 1984, pp.347-359.
3. 3Kuethe, A. M., and Chow, C. Y., Foundations of Aerodynamics: Bases of Aerodynamic Design, 4th ed.Wiley, New York, 1986, pp.225-229.