1. Fluctuations in cone and seed insect populations in Norway spruce;Annila;Commun. Inst. For. Fenn.,1981
2. Diapause and population fluctuations in Megastimus specularis Walley and Megastimus spermotrophus Wachtl (Hymenptera;Annila;Ann. Entmol. Fennici,1982
3. Parasitic Insects;Askew,1971
4. Endocrine interactions between endoparasitic insects and their hosts;Beckage;Ann. Rev. Entomol.,1985
5. Density dependence and the stability of host–parasitoid systems;Bernstein;Oikos,1986