1. 1. Archuleta, R. J. and S. H. Hartzell, 1981. Effects of fault finiteness on near-source ground motion. Bull. Seismol. Soc. Am., 71: 939-957
   2. Alavi, B. and Krawinkler, H. (2000). "Consideration of near-fault ground motion effects in seismic design." Proceedings, 12th World Conference on Earthquake Engineering, Auckland, New Zealand, Paper No. 2665
   3. Mario Paz,1979, “Structural Dynamics” 2nd Edition, CBS Publishers and Distributors
   4. Bray, J.D., and Rodriguez-Marek, A., (2004) “Characterization of forward-directivity ground motions in the near-fault region.” Soil Dynamics and Earthquake Engineering, 24, 815-828.