Arf, O., J. R. Portugal, S. Buzetti, R. Antônio Ferreira Rodrigues, and M. Estáquio de Sá. “Crop Rotation, Green Manure and Nitrogen Fertilizers in Upland Rice under No-Tillage”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 48, no. 2, June 2018, pp. 153-62, https://revistas.ufg.br/pat/article/view/51446.