1. 8) ISO 23469 : Bases for design of structures—Seismic actions for designing geotechnical works, 2005.
2. 9) Veletsos, A. S., Newmark, N. M. and Chelapati, C. V. : Deformation spectra for elastic and elastoplastic systems subjected to ground shock and earthquake motions, Proceedings of the Third World Conference on Earthquake Engineering, Vol. 2, pp. 663-682, 1965.
3. 12) Takemiya, H. : Ring-Pile analysis for a grouped pile foundation subjected to base motion, Structural Eng./ Earthquake. Eng., Vol. 3, No. 1 (Proc. of JSCE, No. 368/I-5), pp. 195-202, 1986.
4. 14) Konagai, K., Yin, Y. and Murono, Y. : Single beam analogy for describing soil-pile group interaction, Soil Dynamics and earthquake Engineering, pp. 213-221, 2003.
5. 15) Tajimi, H. : A Contribution to Theoretical Prediction of Dynamic Stiffness Surface foundation, Proc. of 7th WCEE, Vol. 5, pp. 105-112, 1980.