Binh, N. T., P. T. Ky, N. P. Thao, C. V. Minh, N. X. Cuong, and P. V. Kiem. “Triterpenes and Triterpene-Glycoside from the Leaves of Lawsonia Inermis”. Vietnam Journal of Chemistry, vol. 47, no. 4, Aug. 2014, p. 511, doi:10.15625/4631.