F. F. Stefanello, M. E. Marchetti, E. F. da Silva, J. Stefanello, R. S. B. Doreto, and J. O. Novelino, “Effect of glyphosate and manganese on nutrition and yield of transgenic glyphosate-resistant soybean”, Sem. Ci. Agr., vol. 32, no. 3, pp. 1007–1014, Aug. 2011.