1. Solar energy collection with evacuated tubes;Speyer;Trans. ASME J. Engng Power,1965
2. For details of collector/module construction and testing, consult ERDA progress reports No. C00-2608 dated 31 Aug. 1975, 31 July 1977 and 30 Sept. 1977.
3. Solar heat pipe;Fehlner,1978
4. Designer's guide to heat pipes;Basiulis;Design News,1974
5. The heat pipe;Eastman;Scientific Am.,1968