1. LAMBE T.W. & R.V. WHITMAN. (1969). Soil mechanics. J.Willey & Sons, New York.
2. MYSLIVEC A. (1976). Limits of pressures at rest of loose and cohesive soils, (in Czech). Proc. Actual Problems in Soil Mechanics in Prague, Prague, 1:5–17.
3. TERZAGHI K. (1955). Evaluation of coefficient of subgrade reaction. Geotechnique 5, 4: 297–326.
4. VAN IMPE W.F. (1985) Analysis of four extended loading test results on Atlas-Franki auger piles. Ghent State University, Ghent.
5. WEISSENBACH A. (1962). Der Erdwiderstand vor schmalen Druckflächen. Die Bautechnik 39, 204–211.