Bùi, D., T. Nguyễn, L.-H. Nguyễn, H. Nguyễn, H. Nguyễn, and P. Trần. “Triterpenoids and a Sterol from the Bark of Entandrophragma Angolense”. VNUHCM Journal of Advanced Research in Natural Sciences, Vol. 10, no. 1, Mar. 2026, pp. 3564-71, http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/1270.