1. Applied Technology Council (ATC). (1996). Seismic evaluation and retrofit of concrete buildings Redwood City Calif.
2. Guyader A. C. (2004). “A statistical approach to equivalent linearization with application to performance-based engineering.” Earthquake Engineering Research Laboratory Rep. No. EERL2004-04 Dept. of Civil Engineering California Institute of Technology Pasadena Calif.
3. Guyader A. C. and Iwan W. D. (2004). “AutoCSM—Automated capacity spectrum method of analysis.” Earthquake Engineering Research Laboratory Rep. No. EERL2004-05 Dept. of Civil Engineering California Institute of Technology Pasadena Calif.
4. Estimating earthquake response of simple hysteretic structures;Iwan W. D.;J. Eng. Mech.,1979
5. Iwan W. D. and Guyader A. C. (2001). “A study of the accuracy of the capacity spectrum method of engineering analysis.” Proc. 3rd U.S.–Japan Workshop on Performance-Based Earthquake Engineering Methodology for Reinforced Concrete Building Structures PEER Seattle.