Schuster, Ivan, Elisa Serra Negra Vieira, Hamilton Santana, Deise Sinhorati, Rosane Bezerra da Silva, and Marco Antonio Rott de Oliveira. 2007. “Soybean Gene Flow in the Western Region of Paraná”. Pesquisa Agropecuaria Brasileira 42 (4):515-20. https://doi.org/10.1590/S1678-3921.pab2007.v42.7596.