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2. Tentative Provisions for the Development of Seismic Regulations for Buildings, ATC3-06, Applied Technology Council, Palo Alto, CA, 1978.
3. and , ‘Vibration of structures induced by ground motion’, in Shock and Vibration Handbook, 2nd Edn, McGraw-Hill, New York, 1976.
4. Special Publi;Ellingwood,1980