1. Indicators of International Residential Energy Use and Conservation, Report LBL-11703;Schipper,1981
2. Reconstruction and Analysis of Swedish Residential Energy Use 1960 – 1980, Report LBL-11702;Schipper,1984
3. Kan vi lita paa graddagsmetoden?;Hammarsten;VVS,1980
4. Energibehav för Bebyggelse;Höglund,1977