1. Spelman, K. et al. Modulation of cytokine expression by traditional medicines: a review of herbal immunomodulators. Alternative Medicine Review A Journal of Clinical Therapeutic 11, 128 (2006).
2. Chen, S., Ma, H. & Parnell, J. A. N. In Flora of China Vol. 11 (ed Editorial Board) 139-159 (science pressmissouri botanical garden press, 2008).
3. Fu, J., Zhang, D. M. & Chen, R. Y. Advances in studies on saponins and their pharmacological activities in plants of Polygala L. Chinese Traditional & Herbal Drugs 37, 144–146 (2006).
4. Yang, X. D., Zhang, L. J., Liang, B., Li Zhen, X. U. & Yang, S. L. Oligosaccharide esters isolated from plants of Polygalaceae. Chinese Traditional & Herbal Drugs 954–958 (2002).
5. Ito, H. et al. Xanthones and a cinnamic acid derivatives from Polygala tenuifolia. Phytochemistry (1977).