Chemical constituents of Ngoc Linh ginseng leaves (Panax vietnamensis Ha et Grushv.) - Le, Khang; Chu, Duyen; Mai, Khang; Nguyen, Huy; Phan, Tung; Ngo, Long; Nguyen, Chung; Tran, Luan; Ton That, Quang (VNUHCM Journal of Advanced Research in Natural Sciences, 2021)