1. M. C. Wu, C. W. Su, L. Y. Chang, and C. K. Lee, Acta Pharm. Sin., 9, 233 (1962).
2. P. H. Ho, An Illustrated the Flora of Vietnam, Vol. 1, Tre Publishing House, Ho Chi Minh, Vietnam, 1999.
3. D. T. Loi, Vietnamese Medicinal Plants and Herbs, Medical Publishing House, Hanoi, Vietnam, 2006.
4. R. Sulistiarini, A. A. Soemardji, Elfahmi, and M. I. Iwo, J. Trop. Pharm. Chem., 5, 150 (2020).
5. I. Fikriah and E. Sawitri, Sys. Rev. Pharm., 11, 380 (2020).