1. The Action of Soft Clay along Friction Piles;Seed;Proc. Amer. Soc. Civil Eng., Soil Mech. Found. Division,1955
2. Experiments with Model Piles in Groups;Whitaker;Geotech.,1957
3. Behaviors of Pile Foundations under Lateral Loading and Vibration. Bearing Capacity of single and Group Pile Foundation;Committee of Research for Piled Foundations against Earthquake,1965
4. Theoretical Soil Mechanics;Terzaghi,1943
5. In situ Determination of Horizontal Ground movements;Kallstenius,1961