1. L.C. Craig, D. Craig, in: A. Weissberger (Ed.), Technique of Organic Chemistry, 2nd ed., Vol. 3, Interscience, New York, 1956, p. 149.
2. Countercurrent chromatography
3. N.B. Mandava, Y. Ito (Eds.), Counter-current Chromatography: Theory and Practice (Chromatographic Science Series, vol. 44), Marcel Dekker, New York, 1988.
4. W.D. Conway, Counter-current Chromatography, Apparatus, Theory and Applications, VCH, New York, 1990.