Xavier, J. J. B. N., Assunção, M. V., Vieira, F. V., Almeida, F. C. G., & Carmo, C. M. do. (2014). Influence of populational density of sorghum on flag leaf area and on grain production. Pesquisa Agropecuaria Brasileira, 25(5), 721–726. https://doi.org/10.1590/S1678-3921.pab1990.v25.13486