Dalbem, Márcio Luiz Miranda, and Paulo Regis Ferreira da Silva. “Sequence Order and Date of Establishment of Sunflower and Cassava in Intercropping Systems”. Pesquisa Agropecuaria Brasileira, vol. 25, no. 11, Apr. 2014, pp. 1663-76, doi:10.1590/S1678-3921.pab1990.v25.13712.