Partelli, Fábio Luiz, et al. “Phytosociological Aspects and Weed Management Using Cover Crops on Organic Conilon Coffee Plantations”. Semina: Ciências Agrárias, vol. 31, no. 3, Sept. 2010, pp. 605-18, doi:10.5433/1679-0359.2010v31n3p605.