Authors: Schieffer, GW Pfeiffer, K

Citation: Gw. Schieffer et K. Pfeiffer, Pressurized liquid extraction and multiple, ultrasonically-assisted extractions of hydrastine and berberine from goldenseal (Hydrastis canadensis) with subsequent HPLC assay, J LIQ CHR R, 24(16), 2001, pp. 2415-2427