1. The Mexico earthquake of September 19,1985—a study of seismic waves in the valley of Mexico with respect to a hill zone site;Singh;Earthquake Spectra,1988
2. Long period microtremors, microseism and earthquake damage: Northridge, C.A. earthquake of 17 January 1994;Trifunac;Soil Dynamics and Earthquake Engineering,2000
3. Effects of local geology on ground motion near San Francisco Bay;Borcherdt;Bulletin of the Seismological Society of America,1970
4. Recommended Provisions for Seismic Regulations of New Buildings: Part I, Provisions, FEMA 222A;NEHRP,1994
5. Eurocode 8. Design of structures for earthquake resistance, part 1: General rules, seismic actions and rules for buildings, EN 1998-1. European Committee for Standardization (CEN), 〈http://www.cen.eu/cenorm/homepage.htm〉