1. Businesswire (2023).
https://www.businesswire.com/news/home/20230111005798/en/Global-Geothermal-Market-Growth-Opportunities-Report-2022-Total-Installed-Capacity-will-See-a-Total-Investments-of-11.3-Billion-Rising-from-358-million-in-2022-to-1.83-billion-in-2030---ResearchAndMarkets.com
2. United States Geological Survey.
https://www.usgs.gov/centers/gmeg/science/geothermal-resource-investigations-project
3. Methods for regional assessment of geothermal resources
4. Williams, C.F., Reed, M.J. and Anderson, A.F. (2011) Updating the Classification of Geothermal Resources. Proceedings of the 36th Workshop on Geothermal Reservoir Engineering, Stanford University, 31 January-2 February, 2011, SGP-TR-191.
5. Assessment of geothermal resources of the United States, 1975