1. Experiments in observational seismology;Milne;Trans. Seismol. Soc. Japan,1881
2. Note on the rocking of a column;Perry;Trans. Seismol. Soc. Japan,1881
3. Seismic measurements by the overthrow of columns;Kirkpatrick;Bull. Seismol. Soc. Am.,1927
4. The behavior of inverted pendulum structures during earthquakes.;Housner;Bull. Seismol. Soc. Am.,1963
5. Rocking response of rigid blocks to earthquakes;Yim;Earthq. Eng. Struct. Dyn.,1980