1. Directive 2003/30/EC of the European Parliament and of the Council of 8 May 2003 on the promotion of the use of biofuels or other renewable fuels for transport, Brussels (2003).
2. Biofuels Research Advisory Council UE, biofuels in the European Union, a vision for 2030 and beyond, European Commission, Luxembourg (2006).
3. European Commission Database, Taxes in Europe, Available at: 〈http://ec.europa.eu/taxation_customs/taxation/gen_info/info_docs/tax_inventory/index_en.htm〉, (2011).
4. EurObserv'ER, interactive EurObserv'ER database (2012), Available at: 〈http://observer.cartajour-online.com/Interface_Standard/cart@jour.phtml?NOM_PROJET=barosig&NOM_USER=&Langue=Langue2&Login=OK&Pass=OK〉.
5. Eurostat Statistics Database. European Commission (2012). Avaible at 〈http://epp.eurostat.ec.europa.eu/portal/page/portal/eurostat/home〉.