1. BP Statistical Review of World Energy, June 2005 (www.bp.com).
2. , , , , , Changes in sea level, in Climate Change 2001: The Scientific Basis, ed. by and . Cambridge University Press, Cambridge, UK, pp. 639–693 (2001).
3. The Climate Change Commitment
4. ?Greening? the chemical industry: research and development priorities for biobased industrial products
5. , , , , , et al., Ethanol in Ullmann's Encyclopedia of Industrial Chemistry (7th edn). Wiley, Chichester (2006.). Additional data from www.icispricing.com, www.eia.doe.gov and www.dft.gov.uk.