1. A. I. Botkin, "Strength of cohesionless and brittle materials," Izvestiya Nauchno-issledovatel'skogo Instituta Gldrotekhniki,26 (1940).
2. G. M. Lomize and A. L. Kryzhanovskii, "Basic relations of stress and strength of sands," Osnovaniya, Fundamenty i Mekhan. Gruntov, No. 3 (1966).
3. G. M. Lomize and A. L. Kryzhanovskii, in: Problems of Strength and Deformability of Soils [in Russian], Baku (1966).
4. G. A. Genlev, "A Variant of the Theory of a Cohesionless Mass," Stroitel'naya Mekhanika i Raschet Sooruzhenit, No. 6 (1965).