1. Anderbrant, O., Schlyter, F., and Birgersson, G., 1985, Intraspecific competition affecting parent and offspring in the bark beetle Ips typographus, Oikos
45: 89–98.
2. Annila, E., 1969, Influence of temperature upon the development and voltinism of Ips typographus L. (Coleoptera, Scolytidae), Ann. Zool. Fenn.
6: 161–207.
3. Asbjornsen, P. C., 1861, Om skovtgrk og markaat, Steensballe, Christiania.
4. Austarâ, 0., Pettersen, H., and Bakke, A., 1977, Bivoltinism in Ips typographus in Norway, and winter mortality in second generation, Medd. Nor. Inst. Skogforsk.
33: 269–281.
5. Austarâ, 0., Bakke, A., and Midtgaard, F., 1986, Response in Ips typographus to logging waste odours and synthetic pheromones, J. Appl. Entomol.
101: 194–198.