Malardo, Marcelo Rafael, et al. “Influence of the Sowing Depth and Amount of Sugarcane Straw on the Emergence of Chloris Polydactyla and Eleusine Indica and Their Control by Herbicides Applied Pre-Emergence”. Semina: Ciências Agrárias, vol. 38, no. 3, June 2017, pp. 1187-00, doi:10.5433/1679-0359.2017v38n3p1187.