1. A. F. Hildebrandt, “Potential of Solar Energy for Texas,” report to The State of Texas Governor’s Energy Advisory Council, Houston, Texas, November 1974.
2. S. P. Ellison, Jr., “Summary of Future Energy Resources,” 79th Annual Meeting of the Texas Academy of Sciences, Texas A&M University, College Station, Texas, March 1976, #109.
3. National Solar Energy Research, Development and Demonstration Program, Definition Report (Energy Research and Development Administration, Washington, D.C., June 1975).
4. S. V. Szoklay, Solar Energy and Building ( Halsted Press, New York, 1975 ).
5. B. Sorensen, Science, 189, 255 (1975).