1. Liquefaction of saturated Sandy Soils;Florin;Proc. Fifth Int. Conf. Soil Mech. and Foundation Eng.,1961
2. “Standard Penetration test”, Chapter II of “Application and Interpretation of Soil Exploration Test Results”;Fujita,1968
3. New Madred Earthquake;Fuller;Bull, of U.S. Geolog. Survey,1912
4. Damage and Ground Convulsion in Fukui Earthquake;Geographical Survey Institute,1949
5. Research on Determining the Density of Sand by Spoon Penetration Test;Gibbs,1957