1. Nonlinear Oscillations;Nayfeh,1979
2. Stability of parametrically excited vibrations of an elastic rod;Haight;v. Theor. appl. Mech.,1971
3. The Dynamic Stability of Elastic Systems;Bolotin,1964
4. Effects of longitudinal inertia upon the parametric response of elastic columns;Evensen;J. appl. Mech.,1966
5. The parametric response of imperfect columns;Moody,1967