Silva, E. C. da, Muraoka, T., Villanueva, F. C. A., & Espinal, F. S. C. (2010). Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers. Pesquisa Agropecuaria Brasileira, 44(2), 118–127. https://doi.org/10.1590/S1678-3921.pab2009.v44.1241