Souza, J. R. P. de, Vidal, L. H. I. and Viani, R. A. G. (2009) “Effects of aquous and ethanolic extracts of vegetal species on seed germination of Brachiaria decumbens Stapf”, Semina: Ciências Agrárias, 23(2), pp. 197–202. doi: 10.5433/1679-0359.2002v23n2p197.