1. Bennett, M. J. (1985) personal communication.
2. Bennett, M. J.; Youd, T, L.; Harp, E. L., and Wieczorek, G. F. (1981) “Subsurface Investigation of Liquefaction, Imperial Valley Earthquake, California, October 15, 1979,” U.S. Geological Survey Open File Report 81–502.
3. “Performance of Embankment Dams During the Morgan Hill Earthquake of 24 April 1984,”;Bureau;USCOLD Newletter,1984
4. “Permanent Displacement of Sand with Cyclic Loading,”;Boukavalas;Journal of Geotechnical Engineering, ASCE,1984
5. “Characteristics of Cohesionless Soils Affecting the Stability of Slopes and Earth Fills,”;Casagrande;Journal of the Boston Society of Civil Engineers,1936