1. Butler, L., Neuhoff, K., 2005. Comparison of feed in tariff, quota and auction mechanisms to support wind power development. CWPE 0503, Cambridge, p. 37.
2. CEPS (Centre for European Policy Studies) & ECN (Energy Research Centre of the Netherlands), 2005. Market stimulation of renewable electricity in the EU—what degree of harmonisation of support mechanisms is required? Available online at 〈www.ceps.be〉.
3. COM (1995)682. White paper: an energy policy for the European Union. Not published in the Official Journal.
4. COM (1996)576. Energy for the future: renewable sources of energy—Green Paper for a Community Strategy. Not published in the Official Journal.
5. COM (1997)599. Energy for the future: renewable sources of energy. White Paper for a Community Strategy and Action Plan. Not published in the Official Journal.