Barcellos, Luiz Carlos, et al. “SPRAYING NOZZLES FOR POST-EMERGENT HERBICIDE APPLICATION IN SOYBEAN”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 35, no. 2, Nov. 2007, pp. 85-91, https://doi.org/10.5216/pat.v35i2.2255.