2) Seed, H. B.: Landslides During Earthquakes due to Soil Liquefaction, J. SMFD, ASCE, Vol. 94, No. SM 5, pp. 1055-1122, 1968.
3) Youd, T. L,: Landsliding in the Vicinity of the Van Norman Lakes, U. S Department of the Interior, U. S. Department of Commerce; The San Fernando, California, Earthquake of February 9, 1971, Geological Survey Professional Paper 733, 1971.