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 non-linear system arising from a nuclear spin generator;Sherman,1963
4. On the study of a third-order mechanical oscillator;Dasarathy;Journal of Sound and Vibration,1969
5. Approximate solution to a non-linear differential equation of the third-order with the N. N. Bogoliubov asymptotic method;Maksimov;NASA TFF-133,1963