Literature Cited
N. A. Tsytovich, Mechanics of Frozen Ground [in Russian], Vysshaya Shkola, Moscow (1973).
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Institute of Physicotechnical Problems of the North, Yakutsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 34–40, July–August, 1974.
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Ushakov, G.S. Calculation of the long-term strength of the roofs of rectangular rooms in perennially frozen ground. Soviet Mining Science 10, 420–425 (1974). https://doi.org/10.1007/BF02501429
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DOI: https://doi.org/10.1007/BF02501429