1. Non-linear oscillations;Rosenberg;Applied Mechanics Reviews,1971
2. On the non-linear vibrations of elastic bars;Eringen;Quarterly of Applied Mathematics,1951
3. Non-linear vibrations and stability of shallow beams and shells;Grigoliuk;University of California, Berkeley, Technical Report 7, Contract No.,1960
4. The effect of an axial force on the vibrations of hinged bars;Woiwnowsky-Krieger;Journal of Applied Mechanics,1950
5. Periodic vibrations of systems governed by non-linear partial differential equations;Keller;Communications on Pure and Applied Mathematics,1966