1. Mendrinos, D., Karytsas, C. and Sanner, B. Project GROUND-REACH – Reaching the Kyoto targets by means of a wide introduction of ground coupled heat pumps (GCHP) in the built environment.Proceedings European geothermal congress 2007. Unterhaching, Germany 30 May–1 June 2007
2. Sanner, B., Karytsas, C., Abry, M., Coelho, L., Goldbrunner, J. and Mendrinos, D. GROUNDHIT – Advancement in ground source heat pumps through EU support.Proceedings European geothermal congress 2007. Unterhaching Germany, 30 May–1 June 2007
3. Current status of ground source heat pumps and underground thermal energy storage in Europe