Determination of Flavonoids in Licorice Using Acid Hydrolysis and Reversed-Phase HPLC and Evaluation of the Chemical Quality of Cultivated Licorice - Shibano, Makio; Ozaki, Kazuo; Watanabe, Hitoshi; Tabata, Akinori; Taniguchi, Masahiko; Baba, Kimiye (Planta Medica, 2010)