1. B. C. Frazer, G. Shirane, D. E. Cox and C. E. Olsen, to be published.
2. Thermodynamic and transport properties of uranium dioxide and related phases;Westrum,1965
3. The Heat Capacities of Uranium, Uranium Trioxide, and Uranium Dioxide from 15°K to 300°K
4. N. Curry, private communication.