1. V. Masson-Delmotte, P. Zhai, H.O. Pörtner, D. Roberts, J. Skea, P.R. Shukla, A. Pirani, W. Moufouma-Okia, C. Péan, R. Pidcock, S. Connors, J.B.R. Matthews, Y. Chen, X. Zhou, M.I. Gomis, E. Lonnoy, T. Maycock, M. Tignor, T. Waterfield, Summary for policymakers, in: Global Warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty [(eds.)]. World Meteorological Organization, Geneva, Switzerland, 2018, pp. 1–32.
2. The thermal spectrum of low-temperature energy use in the United States;Fox;Energy Environ. Sci.,2011
3. A History of Geothermal Energy in America, Accessed March 2020, (n.d.). Retrieved from https://www.energy.gov/eere/geothermal/history-geothermal-energy-america
4. Electricity Generation, Accessed March 2020, n.d. Retrieved from https://www.energy.gov/eere/geothermal/electricity-generation
5. J.W. Lund, A.N. Toth, Direct utilization of geothermal energy, in: Proceedings, In World Geothermal Congress 2020, Reykjavik, Iceland, 2020, p. 41.