CORDELL, Geoffrey A. Discovering Our Gifts from Nature Now and in the Future. Part II. Revista de Química, [S. l.], v. 17, n. 1-2, p. 3–15, 2003. Disponível em: https://revistas.pucp.edu.pe/index.php/quimica/article/view/18653. Acesso em: 28 dic. 2025.