1. Lord Rayleigh,Scientific Papers, Vol. 6 (Cambridge University Press, New York, 1920).
2. V. J. Rossow, Natl. Advisory Comm. Aeronaut. Tech. Note No. 3971 (1957).
3. T. G. Cowling,Magnetohydrodynamics(Interscience Publishers, Inc., New York, 1957).