1. Fedotov, P.S., Maryutina, T.A., Pichugin, A.A., and Spivakov, B.Ya., Effect of the Kinetic Properties of Extraction Systems on the Separation of Certain Elements by Countercurrent Chromatography, Zh. Neorg. Khim., 1993, vol. 38, no. 11, p. 1878.
2. Maryutina, T.A., Fedotov, P.S., and Spivakov, B.Ya., Application of Countercurrent Chromatography to Preconcentration and Separation of Inorganic Substances: Two-Phase Liquid Systems, Zh. Anal. Khim., 1997, vol. 52, no. 12, p. 1263 [J. Anal. Chem. (Engl. Transl.), vol. 52, no. 12, p. 1140].
3. Kostanyan, A.E., Liquid-Liquid Countercurrent Chromatography, Khim. Tekhnol., 2004, no. 8, p. 39.
4. Conway, W.D., Countercurrent Chromatography: Apparatus, Theory and Applications, New York: VCH, 1990.
5. Menet, J.M. and Thiebaut, D., Countercurrent Chromatography, New York: Marcel Dekker, 1999.