Afférri, Flávio Sérgio, et al. “ROW SPACING AND SOWING DENSITIES FOR LATE CROPPING MAIZE IN THE TOCANTINS STATE, BRAZIL”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 38, no. 2, July 2008, pp. 128-33, https://doi.org/10.5216/pat.v38i2.4174.