1. Campanella R.G., Robertson P.K., Gillespie D.: Cone penetration testing in deltaic soils. Can. Geotech. J. 20(1), 23–35 (1983)
2. Lunne, T.; Robertson, P.K.; Powell, J.J.M.: Cone Penetration Testing in Geotechnical Practice, Blackie Acad, p. 312. Chapman and Hall/Routledge Press, London (1997)
3. Eslami A., Fellenius B.H.: CPT and CPTu data for soil profile interpretation: review of methods and a proposed new approach. Iran. J. Sci. Technol. Trans. B 28(B1), 69–86 (2004)
4. Tavenas, F.; Leroueil, S.: State of the art on laboratory and insitu stress–strain-time behavior of soft clay. In: Proceedings of the International Symposium on Geotechnical Engineering of Soft Soils, Mexico City vol. 2, pp. 69–113 (1987)
5. Senneset, K.; Janbu, N.: Shear strength parameters obtained from static cone penetration tests. Strength Testing of Marine Sediments; Laboratory and In Situ Measurement, ASTM Special technical publication, STP, vol. 883, pp. 41–54 (1985)