Silva, Gabriel L. Peixoto da, et al. “Effects of Weathes Conditions on Corn Yield in the State of São Paulo, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 22, no. 3, Apr. 2014, pp. 225-31, doi:10.1590/S1678-3921.pab1987.v22.14313.