1. Applied Technology Council. June 1978). “Tentative Provisions for the Development of Seismic Regulations for Buildings.” Report ATC 3‐06 NBS Special Publication 510 NSF Publication 78–08.
2. Biggs J. M. (1964). Introduction to Structural Dynamics . McGraw‐Hill Inc. New York NY.
3. Dynamic Characteristics of Multistory Buildings
4. Chopra A. K. (1981). Dynamics of Structures A Primer : Earthquake Engineering Research Institute Berkeley CA.
5. Clough R. W. and Penzien J. (1975). Dynamics of Structures . McGraw‐Hill Inc. New York NY.