1. European Commission, 1997. Energy for the future: renewable sources of energy. White Paper for a Community Strategy and Action Plan, Brussels, COM(97)599.
2. European Commission, 2001. Directive 2001/77/EC of the European Parliament and of the Council on the promotion of electricity from renewable sources in the internal electricity market. Official Journal of the European Communities, 27 September 2001, L283/33–40.
3. European Commission, 2003. Directive 2003/30/EC of the European Parliament and of the Council on the promotion of the use of biofuels or other renewable fuels for transport, Official Journal of the European Communities, 17 May 2003, L123/42–46.
4. European Convention, 2003. Draft Treaty Establishing a Constitution for Europe, Secretariat of the European Convention, Brussels, CONV 820/03.
5. EWEA, 2004. The European wind industry strategic plan for research & development. European Wind Energy Association, Brussels.