1. A. M. Rozen, Theory of Isotope Separation in Columns (Atomizdat, Moscow, 1960) [in Russian].
2. M. Benedict and T. Pigford, Nuclear Chemical Engineering (McGraw-Hill, New York, 1957; Atomizdat, Moscow, 1960).
3. S. T. Hwang and K. Kammermeyer, Techniques of Chemisry, Vol. 7: Membranes in Separation (Wiley, New York, 1975).
4. Isotopes: Properties, Production, Application, Ed. by V. Yu. Baranov (IzdAT, Moscow, 2000) [in Russian].
5. S. I. Kuznetsov, V. A. Sokolov, and I. P. Sedin, Separation and Analysis of Hydrocarbon Gases (Akad. Nauk SSSR, Moscow, 1963), p. 114 [in Russian].