1. Discussion: the role of damping in seimic isolation;Hall;Earthquake Engineering and Structural Dynamics,1999
2. Current development on isolation of civil buildings in the United States;Kelly,1993
3. The role of damping in seismic isolation;Kelly;Earthquake Engineering and Structural Dynamics,1999
4. Seismic response controlled structure with active variable stiffness system;Kobori;Earthquake Engineering and Structural Dynamics,1993