1. EC, 1996. Energy for the future: renewable sources of energy (Green Paper). COM 576, 20.11.1996.
2. EC, 1997. Energy for the future: renewable sources of energy. White Paper for a Community Strategy and Action Plan. COM 599, final (26/11/1997).
3. EC, 1999. Energy for the future: renewable sources of energy. Campaign for take-off. DGXVII. SEC 504, 9.4.99, European Commission.
4. EC, 2001a. Directive on the promotion of electricity produced from renewable energy sources in the internal electricity market. 2001/77/EC, 27 september 2001.
5. EC, 2001b. Proposal for a Directive of the European Parliament and of the Council on the promotion of the use of biofuels for transport. EC, 28.06.2001.