Lorenzana, A., Hermoso de Mendoza, A., Seco, V., Campelo, P., & Casquero, P. A. (2017). Within-field distribution of the damson-hop aphid Phorodon humuli (Schrank) (Hemiptera: Aphididae) and natural enemies on hops in Spain. Spanish Journal of Agricultural Research, 15(2), e1006. https://doi.org/10.5424/sjar/2017152-10221