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2. Note on the rocking of a column;Perry;Transactions Seismological Society Japan,1881
3. The behavior of inverted pendulum structures during earthquakes;Housner;Bulletin of the Seismological Society of America,1963
4. Rocking of slender rigid bodies allowed to uplift;Psycharis;Earthquake Engineering and Structural Dynamics,1983
5. Harmonic rocking of rigid block on flexible foundation;Koh;Journal of Engineering Mechanics, ASCE,1986