1. On the energy performance of buildings. The European Parliament and the Council of the European Union.;Offic. J. Eur. Union,2010
2. European Environment Agency, Energy and environment report 2008. ISBN 978-92-9167-980-5. doi:10.2800/10548.
3. Energy Audit of Building Systems: An Engineering Approach;Krarti,2011
4. Actual electricity savings and audit predictions for residential retrofit in the pacific northwest;Hirst;Energy Build.,1985
5. ISO 50001:2011. Energy management systems - Requirements with guidance for use.