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2. A. L. Gotman, "Numerical analyses of piles of variable sections under the joint action of vertical and horizontal loads by the finite-element method," Osn. Fundam. i Mech. Gruntov, No. 1, 6-12 (2000).
3. SP 22.13330.2011 Foundation of Buildings and Structures. Actualized Edition of SNiP 2.02.01-83 [in Russian] (2011).
4. P. I. Yakovlev, A. L. Gotman, and R. G. Kurmaev, Interaction of Structures with Soil and Pile Foundations [in Russian], Astroprint, Odessa (2004).