1. G. A. Meerson, G. E. Kaplan, G. F. Silina, and D. D. Sokolov, Investigations in the Area of Geology, Chemistry, and Metallurgy (Report presented by the Soviet Delegation to the International Conference on Peaceful Utilization of Atomic Energy, Geneva, 1955).
2. V. V. Beaver, The Metal Beryllium, Am. Soc. for Metals Chap. 5, “B” 152 (1955).
3. P. Loewenstein, A. R. Kaufman, and S. V. Arnold, The Metal Beryllium, Am. Soc. for Metals Chap. 5 “D” 241 (1955).
4. E. Creutz and D. Gurinsky, Metal Progress 62, 82 (1952).