1. Nonlinear Vibrations;STOKER,1950
2. Semi-classical quantization using the method of harmonic balance;MICKENS;Il Nuovo Cimento,1988
3. Oscillations in Planar Dynamic Systems;MICKENS,1996
4. Nonstandard Finite Difference Models of Differential Equations;MICKENS,1994
5. Analytical Mechanics;FOWLES,1962