1. Acuña J. Distributed thermal response tests – New insights on U-pipe and Coaxial heat exchangers in groundwater-filled boreholes. 2013.
2. Hellstrom G. Borehole Heat Exchangers: State of the Art 2001. Implementing Agreement on Energy Conservation through Energy Storage: Annex 13-Design, Construction and Maintenance of UTES Wells and Boreholes. Subtask 2, International Energy Agency (IEA), 2002.
3. Deep Boreholes for Ground Source Heat Pump Final Report Effsys Expand (Energimyndigheten);Mazzotti,2018
4. Xing L. Estimations of undisturbed ground temperatures using numerical and analytical modeling. PhD. Dissertation. Oklahoma State University, Oklahoma, USA, 2014.
5. Subsurface temperature-depth profiles, anomalies due to climatic ground surface temperature changes or groundwater flow effects;Kukkonen;Glob Planet Change,1994