1. Yu. P. Zheltov and S. A. Khristianovich, “Hydraulic cracking of an oil deposit,” Izv. AN SSSR, OTN, No. 5 (1955).
2. S. A. Khristianovich, Continuum Mechanics [in Russian], Nauka, Moscow (1981).
3. Yu. P. Zheltov, Mechanics of Oil- and Gas-Bearing Beds [in Russian], Nedra, Moscow (1975).
4. P. M. Usachev, Hydraulic Cracking of Mineral Deposits [in Russian], Nedra, Moscow (1986).
5. N. V. Nozhkin, Early Degassing of Coal Beds [in Russian], Nedra, Moscow (1979).