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4. N. N. Fotieva, “Determination of stresses around the contour of an unsupported tunnel with consideration of seismic loads,” Gidrotekh. Stroitel'., No. 1 (1976).
5. N. N. Fotieva, Calculation of the Linings of Noncircular Tunnels [in Russian], Stroiizdat, Moscow (1974).