1. Solar energy collection with evacuated tubes;Speyer;J. Engng Power,1965
2. Evaluation of the evacuated solar annular receivers used at the mid temperature solar systems test facility (MSSTF);Ratzel;Sandia Laboratories Technical Report SAND78-0983,1979
3. Heat loss characteristics of an evacuated plate-in-tube collector;Roberts;Solar Energy,1979
4. Analysis and experimental test of a high-performance evacuated tubular collector;Beekley;U.S. Department of Energy Technical Report DOE/NASA CR-150874,1978
5. Heat extraction from single ended glass absorber tubes;Window;Solar Energy,1983