Santos, José Américo Conde, and Marco Antonio de Andrade. “Interaction Between Sizes of Cultivars, Weeding Intensity and Season Harvest, Upon Some Corn Characteristics”. Pesquisa Agropecuaria Brasileira, vol. 21, no. 8, Apr. 2014, pp. 895-8, doi:10.1590/S1678-3921.pab1986.v21.14939.