1. Xiao, P.G.A Pictorial Encyclopedia of Chinese Medical Herbs(Japanese edition); Chuokoron-sha, Inc. Tokyo, Japan, 1993; Vol. III, p 125.
2. Ma, Z.Z.; Hano, Y.; Nomura, T.; Chen, Y.J.Phytochemistry1999, in press.
3. Batsuren, D.; Telezhenetskaya, M. V.; Yunusov, S. Yu.Khim. Prir. Soedin.1978, 418;Chem. Abstr.1978,89, 126170m.