1. ASTM D 4253. Standard test methods for maximum index density and unit weight of soils using a vibratory table. American Society of Testing and Materials, West Conshohocken, Pennsylvania, USA.
2. ASTM D 4254. Standard test method for minimum index density and unit weight of soils and calculation of relative density. American Society of Testing and Materials, West Conshohocken, Pennsylvania, USA.
3. ASTM D 5311. Standard test method for load controlled cyclic triaxial strength of soil. American Society of Testing and Materials, West Conshohocken, Pennsylvania, USA.
4. Proceedings of the Third International Earthquake Microzonation Conference, Seattle, USA;Chang,1982
5. Fundamentals of soil dynamics;Das,1983