1. Directive 2003/30/EC of the European Parliament and of the Council. 8 May 2003
2. COM (2006) 848 Final, commission of the European communities. Brussels
3. Directive 2009/28/EC of the European Parliament and of the Council. Accessed 23 April 2009
4. Dastillung M (2009) Concawe Report No. 03/09
5. Krár M, Hancsόk J (2009) Proceedings of 7th international colloquium fuels. Mineral Oil Based and Alternative Fuels, Stuttgart/Ostfildern, Germany, pp 507–514