1. 1) Vanmarcke, E., Shinozuka, M., Nakagiri, S., Schuëller, G. I. and Grigoriu, M.: Random Fields and Stochastic Finite Elements, Structural Safety, Vol. 3, pp. 143-166, 1986.
2. 2) Desai, C. S.: Numerical Methods in Geotechnical Engineering, McGraw-Hill, N. Y., 1977.
3. 3) Gudehus, G.: Finite Elements in Geomechanics, John Wiley & Sons, London, 1977.
4. 4) Goodman, R. E.: Methods of Geological Engineering in Discontinuous Rocks, West Publishing Company, 1976.
5. 5) Cambou, B.: Application of First-order Uncertainty Analysis in the Finite Element Method in Linear Elasticity, The Second Int. Conf. on Applications of Statistics and Probability in Soil and Structural Eng., Aachen, pp. 67-87, 1975.