Marques, João Batista Beltrão, and Shiow Shong Lin. “Soybean Yield in Different Plant Populations, Spacings, and Irrigation Periods”. Pesquisa Agropecuaria Brasileira, vol. 18, no. 10, Apr. 2014, pp. 1089-97, doi:10.1590/S1678-3921.pab1983.v18.15431.