Cardoso, Dimas Antonio Del Bosco, and Pedro Milanez de Rezende. “Maximization of Soybean Exploration. IV. Effects of Spacing, Density and Stem Cutting Height on the Production of Hay and Grains from Regrowth”. Pesquisa Agropecuaria Brasileira, vol. 23, no. 7, Apr. 2014, pp. 759-67, doi:10.1590/S1678-3921.pab1988.v23.13958.