1. Laboratory determination of in situ horizontal stress in soil masses
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3. H. G. Poulos, “Methods of Analysis of Piled Raft Foundations”, (a Report prepared on Behalf of Technical Committee TC18 on piled foundations. 2001).
4. Practical solutions to soil-structure interaction problems
5. R. B. Brinkgreve and P. A. Vermeer, “PLAXIS User's Manual” (Version 6.1”, Balkema, Rotterdam, the Netherlands. 1995).