1. Direct Use of the Sun's Energy;Damiels,1964
2. NSF/NASA Solar Energy Panel: An Assessment of Solar Energy as a National Resource,1972
3. Solar Energy Utilization,1971
4. University of Minnesota and Honeywell: Research Applied to Solar Thermal Power Systems, NSF/RANN/SE/GI34871/PR/73/2.
5. Design and feasibility of flat plate solar collector to operate at 100–150°C;Blum,1973