1. Amberk, W. and Russo, M.: Seismic design of underground structures the Bolu tunnel, Report No.102.2-R.133/12.37, Lombardi SA Engineering Limited, Switzerland, 2001.
2. Chen, W. W., Shih, B.-J., Chen, Y.-C., Hung, J.-H., and Hwang, H. H.: Seismic response of natural gas and water pipelines in the Ji-Ji earthquake, Soil Dyn. Earthq. Eng., 22, 1209–1214, 2002.
3. Der Kiureghian, A.: A coherency model for spatially varying ground motions. Earthquake Engineering and Structural Dynamics, 25, 99–111, 1996.
4. Der Kiureghian, A. and Neuenhofer, A.: A response spectrum method for multiple-support seismic excitations. Report No.UCB/EERC-91/08, Berkeley (CA), Earthquake Engineering Research Center, College of Engineering, University of California, 66 pp., 1991.
5. Dumanoğlu, A. A. and Soyluk, K.: SVEM: A stochastic structural analysis program for spatially varying earthquake motions, Turkish Earthquake Foundation, TDV/KT 023-76, 2002.