Teixeira Filho, M.C.M. et al. 2011. Doses, sources and time of nitrogen application on irrigated wheat under no-tillage. Pesquisa Agropecuaria Brasileira. 45, 8 (Jan. 2011), 797–804. DOI:https://doi.org/10.1590/S1678-3921.pab2010.v45.5601.