1. Allee WC, Emerson AE, Park O, Park T, Schmidt KP (1949) Principles of animal ecology. Saunders, Philadelphia
2. Anderson SS, McCrea KD, Abrahamson WG, Hartzel LM (1989) Host genotype choice by the ball gallmaker Eurosta solidaginis (Diptera: Tephritidae). Ecology 70:1048–1054
3. Averill AL, Prokopy RJ (1989) Host marking phenomones. In: Robinson AS, Hooper G (eds) Fruit flies, their biology, natural chemie and control, pp 209–219. Elsevier Sc: Publs, Amsterdam
4. Babendreier D, Hoffmeister TS (1995) Einfluß von Territorialität und Körpergröße auf Kampf- und Reproduktionserfolg der Männchen von Urophora cardui. Mitt Dtsch Ges Allg Angew Entomol 10:595–598
5. Ball JC, Dahlsten DL (1973) Hymenopterous parasitoids of Ips paraconfusus (Coleoptera: Scolytidae) larvae and their contribution to mortality. 1. Influence of host tree and tree diameter on parasitization. Can Entomol 105:1453–1464