1. European Commission, Sixth Framework Programme for Research, Report L232, Research Directorate-General, 2002.
2. Swedish Energy Agency, Energy in Sweden 2005 Energy in Sweden 2005 ET 2005:23, Swedish Energy Agency, Eskilstuna, 2005.
3. K. Adalberth, Energy use and environmental impact of new residential buildings, Ph.D. Thesis, Department of Building Physics, Lund Institute of Technology, Lund, 2000.
4. Energihushållning: Ekonomisk Utvärdering av Energisparåtgärder i Småhus (Energy Conservation: Economic Evaluation of Energy Conservation Measures in Single-family Houses);Norrman,1995
5. S.-I. Gustafsson, B. Karlsson, Lönsamma Energisparåtgärder i 60-talets Flerbostadshus (Profitable Energy Conservation Measures in Apartment Buildings from the 1960s), Report LiTH-IKP-R-727, Linköping Institute of Technology, Linköping, 1997.