1. Applied Technological Council. (1978). “Tentative provisions for the development of seismic regulations for buildings.” Rep. No. ATC3-06 Applied Technological Council Palo Alto Calif.
2. Bertero V. V. Bendimerad F. M. and Shah H. C. (1988). “Fundamental period of reinforced R/C moment-resisting frame structures.” Rep. No. 87 John A. Blume Earthquake Engrg. Ctr. Stanford Univ. Stanford Calif.
3. Chopra A. K. (1995). Dynamics of structures: theory and applications to earthquake engineering. Prentice-Hall Inc. Upper Saddle River N.J.
4. Cole E. E. Tokas C. V. and Meehan J. F. (1992). “Analysis of recorded building data to verify or improve 1991 Uniform Building Code (UBC) period of vibration formulas.” Proc. SMIP92 Strong Motion Instrumentation Program Division of Mines and Geology California Department of Conservation Sacramento Calif.
5. Goel R. K. and Chopra A. K. (1997). “Vibration properties of buildings during earthquakes.” Rep. to be Published Earthquake Engrg. Res. Ctr. Univ. of California Berkeley Richmond Calif.