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2. B. Z. Amusin, “Predicting the stability of permanent workings with allowance for gradual rock fracture in the zone of inelastic deformations,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 5, (1977).
3. K. A. Ardashev, B. V. Matveev, and M. D. Il′inov, “Strength and loosening indicators and the fracture mechanism of rock under bulk compression,” ibid., No. 2 (1981).
4. Yu. M. Basinskii and E. A. Ivanov, “Selection of rational parameters for the bracing of permanent workings in deep mines of the Central Donbass,” in: Proceedings of the All-Union Scientific-Research Institute of Mine Surveying, Collection No. 88, Leningrad (1973).
5. S. Vojciechowski and R. Zylinski, “Zagadnienie wspolpracy obudowy wyrobisk korytarzovych z gorotworem w przypadkach wystepowania pozagranicznego stany wytezenia skal,” Zeszuty Naukowe Politechniki Slaskiej, Ser. Gornicitwo,128, No. 778 (1983).