1. Directive 2001/77/EC of the European Parliament and of the Council of 27 September 2001 on the promotion of electricity produced from renewable energy sources in the internal electricity market;European Council,2001
2. Directive COM/2002/0415 of the European Parliament and of the Council on the promotion of cogeneration based on a useful heat demand in the internal energy market;European Council,2002
3. Regulation for combined heat and power in the European union;Hendriks;Energy Convers Manage,1996
4. European schemes for promoting renewables in liberalised markets;Meyer;Energy Policy,2003
5. Rebuilding without restructuring the energy system in east Germany;Hvelplund;Energy Policy,1998