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2. K. Cohen, The Theory of Isotope Separation as Applied to the Large-Scale Production of235U, McGraw-Hill, New York (1951).
3. A. M. Rozen, Theory of Isotope Separation in Columns [in Russian], Atomizdat, Moscow (1960).
4. G. D. Rabinovich, R. Ya. Gurevich and G. I. Bobrova, Thermal-Diffusion Separation of Liquid Mixtures [in Russian], Nauka i Tekhnika, Minsk (1971).
5. E. Halle, ?Evaluation of the performance of thermal diffusion columns,? J. Chim. Phys. Phys.-Chim. Biol.,60, No. 1-2, 187 (1963).