Tonet, G.L. and Silva, R.F.P. da (1995) “Resistance of wheat genotypes for C biotype of Schizaphis graminum (Rondani, 1852) (Homoptera, Aphididae)”, Pesquisa Agropecuaria Brasileira, 30(11), pp. 1283–1287. doi:10.1590/S1678-3921.pab1995.v30.4426.