References

Jensen, J.L., 1993. Statistics for Petroleum Engineers and Geoscientists. Prentice Hall, Upper Saddle River, New Jersey, USA., ISBN:9780131318557, Pages: 390.

Kosko, B., 1990. Fuzziness vs probability. Intl. J. Gen. Syst., 17: 211-240.
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Legros, J.P., 2012. Major Soil Groups of the World. CRC Press, Boca Raton, Florida, USA., ISBN:978-1-57808-783-9, Pages: 455.

Pluijm, V.D.B.A., 2003. Earth Structure. W.W.Norton & Company Inc., New York, USA.,.

Skempton, A.W., 1964. Long-term stability of clay slopes. Geotech., 14: 77-102.
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