1. John A. Blume Earthquake Engineering Center; Department of Civil and Environmental Engineering; Stanford University; Stanford; CA; 94305; U.S.A.
2. MacDonald Engineering Building; Department of Civil Engineering and Applied Mechanics; McGill University; Montreal; QC; H3A 2K6; Canada
3. Risk Management Solutions; 7015 Gateway Blvd; Newark; CA; 94560-1011; U.S.A.