1. IEA-SHC Task 43. http://www.iea-shc.org/task43.
2. ISO/TC 180 Solar Energy. http://www.iso.org/iso/iso_technical_committee?commid=54018.
3. CEN/TC 312 Thermal solar systems and components. http://www.cen.eu/cen/Sectors/TechnicalCommitteesWorkshops.
4. QAIST: Quality Assurance in Solar Heating and Cooling Technology. http://www.qaist.org/.
5. EN 12975:2006, Thermal solar systems and components – Solar collectors.