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