1. Oscillations of a third order non-linear autonomous system;Rauch,1950
2. On non-linear vibrations of third order;Friedrichs,1946
3. A third order nonlinear system arising from a nuclear spin generator;Sherman,1963
4. On a class of non-linear third order systems reducible to equivalent linear systems;Dasarathy;AIAA J.,1968
5. A new approach to the study of non-linear, non-autonomous systems;Dasarathy;J. Sound Vib.,1968