1. UK House of Commons First Report from the Select Committee on Environmental Audit (2008): http://www.publications.parliament.uk/pa/cm200708/cmselect/cmenvaud/76/7602.htm
2. Sustainable biofuels: prospects and challenges, Royal Society (2008): http://royalsociety.org/document.asp?tip=1&id=7366
3. European Commission proposal for a new renewable energy directive (released, 23 January 2008): http://ec.europa.eu/energy/climate_actions/doc/2008_res_directive_en.pdf
4. Biofuels Progress Report, European Commission (2007): http://ec.europa.eu/energy/energy_policy/doc/07_biofuels_progress_report_en.pdf
5. EuropaBio pressrelease on biofuel production targets (2008): http://www.europabio.org/documents/biofuels/PR_RED_biofuels_240108.pdf