Brochures, leaflets
- Marktführer Wärmepumpen NRW 2011
EnergieAgentur.NRW 05/2011 - Renewable Energy Essentials: Geothermal
IEA Energy Technology Essentials, September 2010 - Using geothermal energy in office buildings
BINE Informationsdienst, Projektinfo 07/10 - Ground-coupled heat pumps for new buildings
BINE Informationsdienst, Projektinfo 03/10 - Administrative buildings as energy-efficient complex
BINE Informationsdienst, Projektinfo 16/09 - Geothermal Heat Pumps - Ground Source Heat Pumps
EGEC - European Geothermal Energy Council a.s.b.l., Published in 2008 - Updated in November 2009 - Domestic Ground Source Heat Pumps: Design and installation of closed-loop systems
Energy Saving Trust, 2007
