Souza, J.R.P. de et al. 2009. Effects of aquous and ethanolic extracts of vegetal species on seed germination of Brachiaria decumbens Stapf. Semina: Ciências Agrárias. 23, 2 (Apr. 2009), 197–202. DOI:https://doi.org/10.5433/1679-0359.2002v23n2p197.