Rando, Eduardo Meneguel, and Antônio Carlos Quintanilha. “Growth and Yield of Castor Bean When Consorted With Crops and Green Manure”. Pesquisa Agropecuaria Brasileira, vol. 25, no. 11, Apr. 2014, pp. 1569-75, doi:10.1590/S1678-3921.pab1990.v25.13688.