@article{articlef18041d0, title = {Upper mantle material in the Brazilian shield}, author = {Berbert, Carlos Oiti and Svisero, Darcy P and Sial, Alcides Nobrega and Meyer, Henry O. A.}, year = {1981}, doi = {10.1016/0012-8252(81)90008-8}, journal = {Earth-Science Reviews} }