1. Theory of Land Locomotion;Bekker,1956
2. R. F. Scott, Principles of Soil Mechanics, p. 33. Addision-Wesley, Reading, Mass.
3. Methods of making mechanical analysis of soils;Kilmer;Soil Sci.,1949
4. Improved stirring and pipetting apparatus for mechanical analysis of soils;Kilmer;Soil Sci.,1954
5. Soil Mechanics and Foundations;Scott,1969