LE , D. K.; HOANG, . M. H. Triterpenoids isolated from helicteres hirsuta. Journal of Technical Education Science, [S. l.], v. 15, n. 1, p. 12–16, 2020. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/170. Acesso em: 7 apr. 2026.