Figueira, Hamilcar José Almeida, et al. “Irrigation Scheduling Parameters and Nitrogen Fertilization for Barley Crop in the Cerrado Region”. Pesquisa Agropecuaria Brasileira, vol. 31, no. 1, Jan. 1996, pp. 63-70, doi:10.1590/S1678-3921.pab1996.v31.4453.