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2. W. J. Turnbull, A. A. Maxwell, and R. G. Ahlvin, Stresses and Deflections in Homogeneous Soil Masses; Proceedings of the 5th International Conference on Soil Mechanics and Foundation Engineering,11, Div. 4/24, Paris (1961).
3. K. R. Peattie and R. W. Sparrow, The Fundamental Action of Earth Pressure Cells, Journal of the Mechanics and Physics of Solids,2 (1954), p. 141.
4. K. R. Peattie and R. W. Sparrow, A Review of the Design of Earth Pressure Cells, Civil Engineering and Public Works Review,50, No. 590 (August, 1955), p. 872.
5. P. V. Dergachev, On the Measurement of Soil Pressure [in Russian], Informatsionnye materialy, Moscow, Vodgeo, No. 6 (1957).