Voll, E., Gazziero, D. L. P., & Karam, D. (1997). Population dynamics of Acanthospermum hispidum DC. under soil and herbicide management practices. Pesquisa Agropecuaria Brasileira, 32(9), 897-904. https://doi.org/10.1590/S1678-3921.pab1997.v32.4734