1. Classification and identification of soils;Casagrande;Am Soc Civ Eng Trans,1948
2. The correlation of index properties with some basic engineering properties of soils;Wroth;Can Geotech J,1978
3. Kulhawy FH, Mayne PW. Manual on estimating soil properties for foundation design. Electric Power Research Inst., Palo Alto, CA (USA); Cornell Univ., Ithaca, NY (USA). Geotechnical Engineering Group; 1990.
4. Correlations of soil and rock properties in geotechnical engineering;Ameratunga,2015
5. Soil mechanics in engineering practice;Terzaghi,1996