N. T. Tuan, P. T. M. Huyen, N. T. Q. Tran, D. T. T. Mai, and H. T. N. Nhon, “ALKALOIDS EXTRACTION FROM VERNONIA AMYGDALINA DEL. AND EVALUATE THE REDUCING POWER ACTIVITY OF THE OBTAINED EXTRACT”, HUIT_OJS, vol. 23, no. 1, Mar. 2023.