1. Handbook on the Desing of Coal-Mine Ventilation [in Russian], Nedra, Moscow (1975).
2. V. K. Vol’skii, S. G. Kaliev, and Sh. Zh. Mashrapov, “Variation in aerodyanmic drag of workings in the influence zone of clearance work,” in: Air and Gas Dynamics and Ventilation of Coal Mines [in Russian], Vol. 19, Eastern Scientifc-Research Institute, Kemerovo (1973).
3. Recommendations on the Choice of Aerodynamic Parameters of the Excavation Section in Ventilation Desing [in Russian], Eastern Scientific-Research Institute, Karagand, (1989).