1. Quality and availability of food for a sycamore aphid population;Dixon,1970
2. Fecundity of brachypterous and macropterous alatae in Drepanosiphum dixoni H. R. L. (Callaphididae, Aphididae);Dixon,1972
3. Morph determination in the bird cherry-oat aphid, Rhopalosiphum padi L.;Dixon;Ann. appl. Biol.,1971
4. Additions to the aphid fauna of Greenland;Hille Ris Lambers;Meddr Grønland,1960
5. Two new taxa of Drepanosiphum Koch, 1855 (Homoptera, Aphididae) with a key to species;Hille Ris Lambers;Ent. Ber., Amst.,1971