1. Dynamic stability of a column under periodic longitudinal forces;Utida;Report of the Aeronautical Research Institute, Tokyo Imperial University No. 193,1940
2. Experiments on parametric instability of columns;Somerset,1964
3. Stability and non-stationary vibration of columns under periodic loads;Iwatsubo;Journal of Sound and Vibration,1972
4. On the parametric excitation of a dynamic system having multiple degrees of freedom;Hsu;Journal of Applied Mechanics,1963
5. On the oscillations of summed and differential types under the parametric excitation;Yamamoto;Memoirs of the Faculty of Engineering, Nagoya University,1967