1. D. M. Gruen and I. Sheft, Metal Hydride Systems for Solar Energy Conversion and Storage, Proc. NSF-ERDA Workshop on Solar Heating and Cooling of Buildings, Charlottesville, Va., April, 1975.
2. D. M. Gruen, et al., Proc, First World Hydrogen Energy Conference, Miami Beach, Fl., March, 1976.
3. D. M. Gruen, et al., Proc. of the 11th IECEC, p. 681, September, 1976.
4. ASHRAE Handbook of Fundamentals, Amer. Soc. Heating & Refrigeration and Air Conditioning Engineering Inc., New York, N. Y., p. 14, 1972.
5. G. Sandrock, Inter. Nickel Co., Private Communication.