1. International Standards to develop and promote energy efficiency and renewable energy sources;IEA-ISO,2007
2. Building Energy Data Book;DOE,2012
3. Energy, Transport and Environment Indicators;EUROSTAT,2011
4. Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the Energy Performance of Buildings;EC;Official Journal of the European Communities,2002
5. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast);EC;Official Journal of the European Communities,2010