1. The effect of financial constraints, technological progress and long-term contracts on tradable green certificates;Agnolucci;Energy Policy,2007
2. Why renewables are not enough: Spain's discepancy between renewables growth and energy (in)efficiency;Bechberger,2007
3. Comparison of feed in tariff, quota and auction mechanisms to support wind power development;Butler;Renewable Energy,2008
4. CEC (Commission for the European Communities), 2005. Commission Staff Working Document. Annex to the Communication from the Commission The support for electricity from renewable energy sources, impact assessment. COM8 (2005) 627 final of 7 December 〈http://ec.europa.eu/energy/res/biomass_action_plan/doc/2005_12_07_comm_biomass_electricity_en.pdf〉.
5. CEC (Commission of the European Communities), 2007a. Communication from the Commission to the Council and the European Parliament Renewable Energy Road Map—Renewable energies in the 21st century: building a more sustainable future 〈http://ec.europa.eu/energy/energy_policy/doc/03_renewable_energy_roadmap_en.pdf〉.