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2. Directive 2006/32/EC of the European parliament and of the council on energy end-use efficiency and energy services and repealing council directive 93/76/EEC;European Commission;Off J Eur Union,2006
3. Energy efficiency database;Enerdata,2014
4. Indikatorer och beräkningsmetoder för uppföljning av politik för energieffektivisering;Swedish Energy Agency,2011
5. Energiindikatorer 2011;Swedish Energy Agency,2011