Carmona, R. and Zatz, R.G. 1998. Systems of soil preparation and the control of perenial weeds in Brachiaria decumbens. Pesquisa Agropecuaria Brasileira. 33, 9 (Sep. 1998), 1515–1523. DOI:https://doi.org/10.1590/S1678-3921.pab1998.v33.4974.