1. Fourth Assessment Report http://www.ipcc.ch/ipccreports/assessments-reports.htm 2008
2. http://www.dh.gov.uk/en/publicationsandstatistics/Publications/PublicationsPolicyAndGuidance/DH_080702 2008
3. http://www.eia.doe.gov/oiaf/ieo/highlights.html 2008
4. The Economics of Climate Change: The Stern Review 2007
5. http://www.official-documents.gov.uk/document/cm70/7040/7040.pdf 2008