Filho, Adriano J.B.V. Azevedo, and Fernando Curi Péres. “Soybean Production Competitiveness in a Region of Campinas, São Paulo”. Pesquisa Agropecuaria Brasileira, vol. 17, no. 4, Apr. 2014, pp. 599-05, doi:10.1590/S1678-3921.pab1982.v17.15759.