1. Ashour SA (1987) Elastic seismic response of buildings with supplemental damping. Ph.D. Thesis, Department of Civil Engineering, Michigan University
2. ATC-40 (1996) Seismic evaluation and retrofit of concrete buildings. Applied Technology Council, Redwood City, CA
3. Bommer JJ, Mendis R (2005) Scaling of spectral displacement ordinates with damping ratios. Earthquake Eng Struct Dynam 34: 145–165. doi: 10.1002/eqe.414
4. Bommer JJ, Elnashai AS, Weir AG (2000) Compatible acceleration and displacement spectra for seismic design codes. In: Proceedings of the 12th world conference on earthquake engineering, Auckland
5. Caltrans (2006) California Department of Transportation, Seismic Design Criteria, ver. 1.4., Sacramento, California