1. Provisional Instruction on Selecting a Method and the Parameters of Weakening an Intransigent Roof in Extraction Sectors [in Russian], VNIMI, Leningrad (1976).
2. B. A. Frolov, “Scientific bases for improving the adaptability of mechanical props with a new level of engineering,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 2 (1982).
3. G. A. Katkov and V. N. Ostapenko, “The practice of treating layers with intransigent roofs with frontal torpedoing,” Ugol', No. 11 (1979).
4. A. A. Zhurilo, “The establishment of the parameters of controlling intransigent roofs in cleaning-up operations,” in: Improvements in the Technology of Industrial Treatment of Coal Seams [in Russian], No. 188, Nauchn. Soobshch. IGD im. A. A. Skochinsky, Moscow (1980).
5. “A method of controlling an intransigent roof,” Inventor's Certificate No. 519542 (1974).