American Society of Civil Engineers. Geo-Institute, ebrary, Inc, Zeng, X., Manzari, M. T., & Hiltunen, D. R. (2008). Geotechnical earthquake engineering and soil dynamics IV: Proceedings of the conference, May 18-22, 2008, Sacramento, California. American Society of Civil Engineers.

American Society of Civil Engineers. Geo-Institute, Inc ebrary, Xiangwu Zeng, Majid T. Manzari, juo Dennis R. Hiltunen. Geotechnical Earthquake Engineering and Soil Dynamics IV: Proceedings of the Conference, May 18-22, 2008, Sacramento, California. Reston, Va.: American Society of Civil Engineers, 2008.

American Society of Civil Engineers. Geo-Institute, et al. Geotechnical Earthquake Engineering and Soil Dynamics IV: Proceedings of the Conference, May 18-22, 2008, Sacramento, California. American Society of Civil Engineers, 2008.