1. A Resource-efficient Europe – Flagship Initiative under the Europe 2020 Strategy;EC,2011
2. EU, Directive 2002/91/EU of the European Parliament and the Council of 16 December 2002 on the Energy Performance of Buildings (EPBD).
3. EU. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings.
4. EU, Directive 2018/844/EU of the European Parliament and of the Council of 30 May 2018 Amending Directive 2010/31/EU on the Energy Performance of Buildings and Directive 2012/27/EU on Energy Efficiency.
5. EU, Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on Energy Efficiency, Amending Directives 2009/125/EC and 2010/30/EU and Repealing Directives 2004/8/EC and 2006/32/EC Text with EEA Relevance.