Yang X, Wang N, Shen C, Li H, Zhao J, Chen T, Li Y.  2019.  An effective method based on medium-pressure liquid chromatography and recycling high-speed counter-current chromatography for enrichment and separation of three minor components with similar polarity from Dracocephalum tanguticum. JSSC Journal of Separation Science. 42(3):684-690.

Chen T, Yang X, Wang N, Li H, Zhao J, Li Y.  2018.  Separation of six compounds including two n-butyrophenone isomers and two stibene isomers from Rheum tanguticum Maxim by recycling high speed counter-current chromatography and preparative high-performance liquid chromatography. Journal of Separation Science. 41(19):3660-3668.

Chen T, Li H, Zou D, Liu Y, Chen C, Zhou G, Li Y.  2016.  Separation of three anthraquinone glycosides including two isomers by preparative high-performance liquid chromatography and high-speed countercurrent chromatography from Rheum tanguticum Maxim. ex Balf. Journal of Separation Science. 39(16):3105-3112.

Chen T, Li H, Zou D, Liu Y, Chen C, Zhou G, Li Y.  2016.  Separation of three anthraquinone glycosides including two isomers by preparative high-performance liquid chromatography and high-speed countercurrent chromatography from Rheum tanguticum Maxim. ex Balf Liquid Chromatography. J. Sep. Science Journal of Separation Science. 39(16):3105-3112.