1. Committee AEN/CTN 206/SC 117 “Thermoelectric solar energy systems” (web page http://www.aenor.es/aenor/normas/ctn/fichactn.asp?codigonorm=AEN/CTN%20206/SC%20117&pagina=1)
2. UNE 206009. Solar thermal electric plants. Terminology (Spanish and English) (2013).
3. Committee IEC TC 117 “Solar thermal plants” (web page http://www.iec.ch/dyn/www/f?p=103:7:0::::FSP_ORG_ID,FSP_LANG_ID:7851,25)
4. SolarPACES task III Solar Technology and Advanced Applications (web page http://www.solarpaces.org/tasks/task-iii-solar-technology-and-advanced-applications)
5. Heat Loss Testing of Schott’s 2008 PTR70 Parabolic Trough Receiver, Technical Report NREL/TP-550-45633, May 2009.