1. Bertero V. V. (1986). “Observation of structural pounding.” Proc. Int. Conf.: The Mexico Earthquake—1985 ASCE New York N.Y. 264–278.
2. Clough R. W. and Penzien J. (1993). Dynamics of structures 2nd Ed. McGraw-Hill Book Co. Inc. New York N.Y.
3. Der Kiureghian A. (1980). “A response spectrum method for random vibrations.” EERC Rep. No. UCB/EERC-80/15 Earthquake Engrg. Res. Ctr. Univ. of California Berkeley Calif.
4. Gulkan P. and Sozen M. A. (1974). “Inelastic response of reinforced concrete structures to earthquakes.” ACI J. Title No. 71-41 12 604–610.
5. Estimating inelastic response spectra from elastic spectra