1. Theory and Application of Mathieu Functions;McLachlan,1947
2. A Course of Modern Analysis;Whittaker,1927
3. On the stability of the solution of Mathieu's equation;Van der Pol;Philos. Mag.,1928
4. The tabulation of Mathieu equations;Bickley;Math. Tables Other Aids to Comput.,1945
5. C. Hayashi, Nonlinear Oscillations in Physical Systems, Princeton University Press, Princeton, 1964.