1. A. M. Rozen, Theory of Isotope Separation in Columns (Atomizdat, Moscow, 1960) [in Russian].
2. P. G. Kuznetsov, V. A. Sokolov, and I. P. Sedin, Separation and Analysis of Hydrocarbon Gases (Akad. Nauk SSSR, Moscow, 1963), p. 114 [in Russian].
3. A. A. Zhukhovitskii and N. M. Turkel’taub, Gas Chromatography (Gostoptekhizdat, Moscow, 1962), pp. 7, 9, 10 [in Russian].
4. V. A. Kirillin, A. E. Sheindlin, and E. E. Shpil’rain, Thermodynamics of Solutions (Energiya, Moscow, 1980), p. 225 [in Russian].
5. Isotopes: Properties, Production, Application, Ed. by V. Yu. Baranov (IzdAT, Moscow, 2000) [in Russian].