1. Green Paper: A European Strategy for Sustainable, Competitive and Secure Energy,2006
2. Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the energy performance of buildings;Off. J. Eur. Commun.,2002
3. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast);Off. J. Eur. Union,2010
4. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on the energy efficiency;Off. J. Eur. Union,2012
5. Green Energy Audit of Buildings, a Guide for Sustainable Energy Audit of Buildings;Dall’O,2013