S, O.; F.H, A.; H, H.; N.H, F.; M, B. Enzymatic Esterification of Betulinic Acid. Malaysian Journal of Science, [S. l.], v. 24, n. 1, p. 97–98, 2005. Disponível em: http://mjs.um.edu.my/index.php/MJS/article/view/8937. Acesso em: 18 may. 2024.