Bartmeyer, T.N. et al. 2012. Double purpose wheat under beef cattle grazing in Campos Gerais, Paraná State, Brazil. Pesquisa Agropecuaria Brasileira. 46, 10 (Jan. 2012), 1247–1253. DOI:https://doi.org/10.1590/S1678-3921.pab2011.v46.9084.