1. Lamé, Mathieu and Related Functions in Physics and Technology;Strett,1935
2. Theory and Applications of Mathieu Functions;Maclachlan,1953
3. Non-linear Oscillations in Mechanical and Electrical Systems;Stoker,1953
4. The behaviour of a non-linear Hamiltonian system with one degree of freedom at the boundary of a region of parametric resonance;Markeyev;Prikl. Mat. Mekh.,1995
5. The asymptotic solutions of the equations of dynamics;Bolotin;Vestnik MGU,1980