1. Clough R. W. and Tang D. T. (1975). “Earthquake simulator study of a steel frame structure Vol. 1: Experimental results.” EERC Report No. 75‐6 University of California Berkeley Calif.
2. Ewins D. J. (1984). Modal testing: theory and practice . John Wiley and Sons New York N.Y.
3. Miller R. S. Krawinkler H. and Gare J. M. (1979). “Model tests on earthquake simulators development and implementation of experimental procedures.” Report No. 39 Dept. of Civil Engineering Stanford University Stanford Calif.
4. Moncarz P. D. and Krawinkler H. (1981). “Theory and application of experimental model analysis in earthquake engineering.” Report No. 50 Dept. of Civil Engineering Stanford University Stanford Calif.
5. Sage A. P. and White C. C. (1977). Optimal systems control 2nd Ed. Prentice Hall Inc. Englewood Cliffs N.J.