1. Energy White Paper—Our Energy Future: Creating a Low Carbon Economy;British Crown,2003
2. National CHP Roadmap: Doubling Combined Heat and Power Capacity in the United States by 2010, US Combined Heat and Power Association, Washington, DC, USA, 1998, see also: http://uschpa.admgt.com/CHProadmap.pdf.
3. World Survey of Decentralized Energy, WADE, Edinburgh, UK, 2004, see also: http://www.localpower.org/pdf/WorldSurveyonDE-2004.pdf.
4. Sulzer Hexis, Witherthur, Switzerland, 2004, see also: http://www.hexis.com/map/SulzerDocuments/DocumentsImages/Documents/Hexis/HEXIS_Prospekt_E.pdf.
5. Planned SOFC Products, Siemens AG, Erlangen, Germany, 2004, see also: http://www.siemenswestinghouse.com/en/fuelcells/plannedsofc/index.cfm.