References
- Ito , Y. and Bhatnagar , R. 1981 . Preparative counter‐current chromatography with a rotating coil assembly . J. Chromatogr. , 207 : 171 – 180 .
- Ito , Y. and Bhatnagar , R. 1984 . Improve scheme for preparative counter‐current chromatography (CCC) with a rotating coil assembly . J. Liq. Chromatogr. , 7 : 257 – 273 .
- Du , Q. , Wu , P. and Ito , Y. 2001 . Low‐speed rotary countercurrent chromatography using convoluted multilayer helical tube for industrial separation . Anal. Chem. , 72 : 3363 – 3365 .
- Du , Q.‐Z. , Ke , C.‐Q. and Ito , Y. 1998 . Separation of epigallocatechin gallate and gallocatechin gallate using four serially coupled high‐speed countercurrent chromatography instruments . J. Liq. Chromatogr. & Rel. Tech. , 21 : 203 – 208 .