1. Directive 2004/8/EC of the European Parliament and the Council on the promotion of cogeneration;Official Journal of the European Union,2004
2. Commission Decision establishing harmonized efficiency reference values for separate production of electricity and heat in application of Directive 2004/8/EC;Official Journal of the European Union,2006
3. Commission Decision establishing detailed guidelines for the implementation and application of Annex II to Directive 2004/8/EC;Official Journal of the European Union,2008
4. Cogeneration: a regulatory framework toward growth;Cardona;Energy Policy,2005
5. Efficiencies and indicators defined to promote combined heat and power;Nesheim;Energy Conversion & Management,2007