1. Pharmacopoeia of the People’s Republic of China (English Edition), Vol. I, Chemical Industry Press, Beijing, China (2005)
2. Kojima R., Fukushima S., Ueno A., Saiki Y., Chem. Pharm. Bull. 18, 2555–2563, (1970)
3. Junying G., Wenquan H., Tianchi R., Xiufeng M., Medicinal Herbs (Practical Traditional Chinese Medicine & Pharmacology), 47–48, New World Press Beijing (1991); Junying G., Wenquan H., Tianchi R., Xiufeng M., Materia Medica der Chinesischen Arzneimitteltherapie, 66–67, Verlag für Traditionelle Chinesische Medizin Dr. Erich Wühr, Bad Kötzting (1993)
4. Zhu Y., Chinese Materia Medica, Chemistry, Pharmacology and Applications, 149–155, Harwood Academic Publishers (1998)
5. Yen K.Y., The Illustrated Chinese Materia Medica, 66, SMC Publishing Inc., Taipei (1992)