Concept of Response Spectrum
- J. Penzien and M. Watabe, "Characteristics of 3-D Earthquake Ground Motions," Earthquake Engineering and Structural Dynamics, Vol. 3, pp. 365-373, 1975.
- E. L. Wilson, A. Der Kiureghian and E. R. Bayo, "A Replacement for the SRSS Method in Seismic Analysis," Earthquake Engineering and Structural Dynamics, Vol. 9, pp. l87-l92, 1981.
- "Dynamics of structures" by Anil K chopra C. Menun and A. Der Kiureghian, "A Replacement for the 30 % Rule for Muticomponent Excitation", Earthquake Spectra, Vol. 13, Number 1, February 1998.