Isolation of steroids from n-hexane extract of the stems of Miliusa velutina Dun Hook. f. et. Thoms - Phuc, Bui; Chau, Tran; Khang, Le; Tung, Phan; Duong, Ngo; Long, Ngo; Ton That, Quang (VNUHCM Journal of Advanced Research in Natural Sciences, 2023)