1. A. I. Brodskii, Chemistry of Isotopes (Acad. Sci. USSR Press, 1952).
2. K. Cohen, Sci. and Eng. Nucl. Power (Ed. C. Goodman) (New York, 1949); Theory of Isotope Separation (New York, 1951).
3. N. M. Zhavoronkov and Ia. D. Zel’venskii, Collection: Processes and Apparatuses of Chemical Technology (State Chem. Press, 1953).
4. A. M. Rozen, Doklady Akad. Sci. USSR 108, 122 (1956).
5. A. M. Rozen, Doklady Akad. Sci. USSR 107, 295 (1956).