1. Rundle, R. E., Baenziger, N. C., Wilson, A. S., and McDonald, R. A., J. Amer. Chem. Soc., 70, 99 (1948).
2. Ackermann, R. J., AEC–ANL–5482 (1955).
3. Katz, J., and Rabinowitch, E., “The Chemistry of Uranium”, Part 1 (New York, 1951).
4. Hering, H., and Perio, P., Bull. Soc. Chim. France, 351 (1952).
5. Jacob, C. W., and Warren, B. E., J. Amer. Chem. Soc., 59, 2589 (1937).