Investigation of longitudinal forces in pipes on undercut ground

Yu. I. Karavaev, Construction and Operation of Pipes in Mining Zones [in Russian], Ugletekhizdat (1959). A. G. Kamershtein, Operating Conditions of Pipes and Their Reserve Bearing Capacity [in Russian], Stroiizdat (1966). G. K. Klein, Analysis of Pipes Buried in the Soil [in Russian], Stroiizdat (1951). E. S. Venttsel', Theory of Probability [in Russian], Nauka (1964). A. S. Tregub, "Analysis of pipes equipped with expansion pieces and located in a zone of exploitation of a suite of strata," Stroitel'stvo Truboprovodov, No. 9 (1968).