Whittaker and Watson (1990, pp. 539-540) write Lamé's differential equation for Ellipsoidal Harmonics of the
four types as
(1) | |||
(2) | |||
(3) | |||
(4) |
(5) | |||
(6) |
References
Whittaker, E. T. and Watson, G. N. A Course in Modern Analysis, 4th ed. Cambridge, England:
Cambridge University Press, 1990.