Literature Cited
F. N. Voskoboev, E. F. Koz'mina, and V. A. Smirnov, “Devices for remote measurement of deformation of rocks during the working of coal seams without supports,” Tr. VNIMI, Publ. by VNIMI, Leningrad (1966).
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Additional information
All-Union Scientific-Research Institute of Mine Surveying (VNIMI). Plekhanov Mining Institute, Leningrad. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 131–133, May–June, 1969.
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Koz'mina, E.F., Semevskaya, N.V. Multiple-channel automatic recorder for digital recording of the readings of frequency sensors. Soviet Mining Science 5, 357–358 (1969). https://doi.org/10.1007/BF02501880
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DOI: https://doi.org/10.1007/BF02501880