1. Les chiffres clés du bâtiment en 2006 (Building Sector Key Figures in 2006);French Environment and Energy Management Agency,2007
2. Directive 2002/91/EC of the European Parliament and the Council of the 16 December 2002 on the energy performance of buildings, Official Journal of the European Communities, 2002.
3. A hybrid decision support system for sustainable office building and energy performance improvement;Juan;Energy and Buildings,2010
4. Evaluation of energy performance indicators and financial aspects of energy saving techniques in residential real estate;Entrop;Energy and Buildings,2010
5. European Commission, Europe's energy position - markets & supply, Publications Office of the European Union, Luxembourg, 2010.