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2. V. E. Bolikov and A. E. Balek, “Behavior of unstable stressed rock masses during construction of mine shafts,” Gorn. Vestn., No. 4 (1995).
3. V. A. Uskov, “Combined bracing for unstable rock,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 1 (1996).
4. Construction Rule and Regulation II-94-80, Underground Mine Workings [in Russian], Stroiizdat, Moscow (1982).
5. N. N. Fotieva, Seismic Calculations for Underground Structures [in Russian], Nedra, Moscow (1980).