Separation of patuletin-3-O-glucoside, astragalin, quercetin, kaempferol and isorhamnetin from Flaveria bidentis (L.) Kuntze by elution-pump-out high-performance counter-current chromatographyYun Wei, I. Sutherland, Qianqian Xie et al.|Journal of Chromatography A|2011Cited by 97