Modolo, A.J. et al. 2012. Seeding quality and soybean yields from using different furrowers and operation speeds. Semina: Ciências Agrárias. 33, 6Supl1 (dez. 2012), 3009–3016. DOI:https://doi.org/10.5433/1679-0359.2012v33n6Supl1p3009.