1. Standard Test Method for Specific Gravity of Soils;American Society for Testing and Materials,2000
2. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System);American Society for Testing and Materials,2000
3. Standard Test Method for Particle-Size Analysis of Soils;American Society for Testing and Materials,2002
4. Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils;American Society for Testing and Materials,2005
5. The influence of end restraint on the compression strength of a cohesionless soil;Bishop;Géotechnique,1965