Duong, Dinh Chung, Ngoc Yen Nguyen Thi, and Hung Lam Hoa. “Effect of Extraction Conditions on the Antioxidant Activity of Vernonia Amygdalina Del. (Asteraceae)”. VNUHCM Journal of Engineering and Technology 1, no. 3 (September 19, 2019): 37-46. Accessed December 22, 2024. https://stdjet.scienceandtechnology.com.vn/index.php/stdjet/article/view/597.