Thoan, Nguyen, 		Hung, Bui, 		Ly, Nguyen, AND 		Thuong, Phuong.
" Development of a Method for Qualitative and Quantitative Analysis of the Compound ent-7-hydroxy-15-oxokaur-16-en-18-yl Acetate in the Medicinal Material Crotonis Tonkinensis" <em>VNU Journal of Science: Medical and Pharmaceutical Sciences</em> [Online], Volume 33 Number 1 (14 June 2017)