1. Melnikova, S., Sorokin, S., Goryacheva, A., Galkina, A. Informational and analytical review. The first five years of the “shale revolution:” What do we now know for sure? Moscow: INEI RAS, 2012, 46 p.
2. Shell’s In Situ Conversion Process−From Laboratory to Field Pilots
3. Government, U. S. Department of Energy, U.S. Modern Shale Gas Development in the United States: A Primer—Geology, Regulations, Environmental Considerations, Hydraulic Fracturing, Protecting Groundwater, Pollution Threats, Impact to Land. U.S.: Independently published; Washington, DC, 2017, 108.