Zanini, Agostinho, et al. “Ecological Aspects of Aphidius Colemani Viereck (Hymenoptera: Aphidiidae) on the Sitobion Avenae (Fabricius) (Hemiptera: Aphididae) Population in Wheat Culture in Medianeira, PR”. Semina: Ciências Agrárias, vol. 27, no. 2, June 2006, pp. 185-98, doi:10.5433/1679-0359.2006v27n2p185.