1. Countercurrent Chromatography: Theory and Practice;Ito,1988
2. Countercurrent Chromatography, Principle, Apparatus and Applications;Conway,1990
3. High-Speed Countercurrent Chromatography;Ito,1996
4. Modern Countercurrent Chromatography, ACS Symposium Series 593,1995
5. Countercurrent Chromatography, Chromatographic Series, vol. 82,1999