1. Marland, G.; Andres, B.; Boden, T.;Carbon Dioxide Information Analysis Center:Oak Ridge, TN, 2007.
2. Ecological responses to recent climate change
3. G8 Summit 2009, L’Aquila, Italy 2009; G8 Summit 2007, Heiligendamm, 2007.
4. 2007 Energy White Paper, Department of Trade and Industry;U.K. Government:London, 2007.
5. Energy from Fossil Fuels