1. See, for example, C. C. Lin,The Theory of Hydrodynamic Stability(Cambridge University Press, Cambridge, England, 1955), p. 126.
2. Lord Rayleigh, Scientific Papers, (C. J. Clay and Sons, Cambridge, England), Vol. VI, p. 197. I am indebted to the referee of this paper for pointing out this reference to me.
3. See, for example, C. C. Lin,The Theory of Hydrodynamic Stability(Cambridge University Press, Cambridge, England. 1955), Chaps. 4 and 8.
4. Stability of an Idealized Atmosphere. I. Discussion of Results
5. E. T. Whittaker and G. N. Watson,A Course of Modern Analysis(Cambridge University Press, Cambridge, England, 1943), Chap. X.