Denholm, I., G. Devine, D. Morris, C. Furk, A. Macnicoll, M. Solomon, E. Garrod, and P. Hingley. (2001). IRAG: Minutes of 7th meeting held at HRI East Malling. Insecticide Resistance Action Group, UK, Friday May 11, 2001, Friday May 11, 2001.
Weichel, L., and R. Nauen. (2003). Monitoring of insecticide resistance in damson hop aphid, Phorodon humili Schrank (Hemiptera: Aphididae) from German hop gradens. Pest Management Science, 59, 991-998.
Boness, M. and Unterslenhofer, G. (1974). Insektizidresistenz bei Blattlausen. Z. Angew. Entomol., 77, 1-19.
Borovoi, A. P. (1981). Resistance to insecticides in the two-spotted spider mite and the hop aphid on hops in the Ukranian SSR. IOPC/WPRS Bull., 4, 16-20.
Brumel, S. and Hausdorf, H. (1986). Preliminary studies on the resistance of Phorodon humuli Schr. To insecticides in Austria. Pflanzenschutzberichte., 47(3), 39-42.
Coulon, J., Lhoste, J. and Missonnier, J. (1967). Problemes poses en France par les depredateurs des cultures resistantes aux pesticides. Travaux de recherches enterprises. Abst. 6th Int. Congr. Plant Prot., 9., 578
Dicker, G.H.L. (1965). In: FAO 1967.
Hrdy, I. And Kriz, J. (1981). Insecticide resistance spectrum in Cxechoslovak populations of the hop aphid Phorodon humuli. 10BC/WPRS Bull., 4(3), 29-39.
Hrdy, I. And Zeleny, J. (1968). Hop ahid (Phorodon humuli) resistant to thiometon. Acta Entomol. Bohemoslov., 65, 183-87.
Hrdy, I. (1981). Personal communications.
Lakocy, A. (1974). Communication to FAO.
Meier, W. (1969). Untersuchungen zum stand der Insektizidresistenz bei Blattlausen. Mitt. Schweiz. Landw., 17, 65-77.
Muir, R. C. and Cranham, J. E. (1981). Resistance to pesticides in damson-hop aphid and red spider mite on English hops. IOBC/WPRS Bull., 4, 11-15.
Perju, T. and Ghizdavu, I. (1981). Bioecological research and integrated control of hop pests in Romania. IOBC/WPRS Bull., 4, 147-55.
Russ, K. (1974). Communication to FAO.
Setuin, E. (1974). Communication to FAO.
Taran, F. I. And Sikura, N. M. (1975). Rezistenthost vreditelej I vozbuditelej boleznej k chimiceskim sredstvam zascity rastenij. Tezisy Dokladov, 75, 75-76.
Zohren, E. (1970). Die Massenvermehrung der hopfenblattlaus und der gemeinen Spinnmilbe und Moglichkeiten einer verbesserten Bekampfung im Hopfenbau. Hopfen Rundschau, 21, 11.
Zolnir, M. (1973). The occurrence of resistance of hop aphid to Meashystox in hop gardens of Savinjska Dolina. Bilt. Hmelj. Sirak., 5, 91-96.
Zohren, E. (1972). Ergebnisse eines Versuches zur Bekampfung der Hopfen blattlaus (Phorodon humuli) mit verschiedenen Insektiziden und Applikationsmetoden. Pfl. Krankh., 79, 668-78.