1. M. Benedict and T. Pigford, Chemical Technology of Nuclear Materials [Russian translation], Atomizdat (1960).
2. A. M. Rozen, Theory of Isotope Separation in Columns [in Russian], Atomizdat (1960).
3. K. Alexander, Usp. Fiz. Nauk,76, No. 4, 711 (1962).
4. K. Jones and V. Ferry, Separating Isotopes by the Thermodiffusion Method [Russian translation], IL (1947).
5. G. Barvikh and R. Ya. Kucherov, Atomnaya Énergiya,7, No. 3, 275 (1959).