1. EU directive 2010/31 of the European parliament and of the council of 19 May on the energy performance of buildings;European Union;Official J Eur Union,2010
2. Passivhaus Institut. Available at: http://www.passiv.de/[accessed 24.11.14].
3. Boverket - the swedish national board of housing, building and planning;BBR 21: Rules for building BSF 2014:3,2014
4. Specification for zero-energy houses, passive houses and minimum-energy houses – dwelling;Forum for Energy Efficient Buildings (FEBY),2012
5. Marknadsöversikt av uppförda lågenergibyggnader;Wahlström,2011