1. “2,300 Homes Get Solar Hot Water 1st Half of '77”, article in “The Solar Collector”, Newsletter of the Florida Solar Energy Center (300 State Road 401, Cape Canaveral, Florida 32920) No. 7, p. 1, January, 1978.
2. L. E. Torkelson, “Solar Collector Evaluation Studies”, (Sandia Laboratories Albuquerque), in Abstract of Presentations, DOE/DST Advanced Thermal Power Program Review, sponsored and organized by DOE, JPL and SERI, Golden, Colorado, May 1978.
3. “Application of Solar Technology to Today's Energy Needs”, Vol. II, Office of Technology Assessment, Congress of the United States, Washington D.C. 20510, June, 1977.
4. “On the Fluctuating Power Generation of Large Wind Energy Convertors, With and Without Storage Facilities”;Sorensen;Solar Energy,1978
5. “Units and Symbols in Solar Energy”;Beckman;Solar Energy,1978