M. Pasqual and I. de Barros, “Effects of naphthaleneacetic acid and 6-benzylaminopurine on <i>In vitro</i> buds proliferation of <i>Stryphnodendron adstringens</i> (Mart.) Coville”, PAB, vol. 27, no. 7, pp. 1017–1019, Jul. 1992.