1. SHC Task40/ECBCS Annex52 IEA, Net Zero Energy Buildings database, http://iea40.buildinggreen.com/index.cfm (accessed 10.09.11).
2. Zero Energy Buildings in France: overview and feedback;Lenoir,2011
3. Net zero energy solar buildings: an overview and analysis on worldwide building projects;Musall,2010
4. Net Zero Energy Buildings – International Projects of Carbon Neutrality in Building;Voss,2011
5. Fachinformationszentrum, Net zero-energy buildings – map of international projects, http://www.enob.info/en/net-zero-energy-buildings/map/ (accessed 05.04.12)