1. Climate change 2013: The physical science basis;IPCC,2013
2. Energy in Sweden – Facts and Figures 2012,2012
3. Potential Study for Building Integrated PVs in Sweden – Report 2 Level of Irradiation on Building Areas (Swedish) Report TVBH-7216;Kjellsson,2000
4. A solar rooftop assessment for Austin;Wiese,2010
5. Analysis of the photovoltaic solar energy capacity of residential rooftops in Andalusia (Spain);Ordóñez;Renew. Sustain. Energy Rev.,2010