Cruz, I. and Vendramim, J.D. 2014. Effect of different infestation levels of the greenbug, <i>Shizaphis graminum</i> (Rondani, 1852) on susceptible and resistant sorghum genotypes. Pesquisa Agropecuaria Brasileira. 23, 2 (Apr. 2014), 111–118. DOI:https://doi.org/10.1590/S1678-3921.pab1988.v23.13787.