R.C.L. Costa, A.K.S. Lobato, M.A.M. Neto, B.G. Santos Filho, W.J.M.S. Maia, C.F. Oliveira Neto, A.G.T. Barreto, R.S. Lemos and D.D.S. Gouvea
International Journal of Botany 4 ( 3 ): 303 - 308 , 2008