Gonçalves, José Otávio Neto. “Nitrogen and Dry Matter Production of ‘common’ Annual Ryegrass”. Pesquisa Agropecuaria Brasileira, vol. 14, no. 1, Apr. 2014, pp. 47-51, https://doi.org/10.1590/S1678-3921.pab1979.v14.16641.