- Hartl, G., and N. J. Mills. 1983. Bark beetles (Dendroctonus, Pissodes). Work in Europe in 1983. Commonwealth Institute of Biological Control, European Station, Delemont, Switzerland, Report. 12 p.
- Mills, N. J., and G. Hartl. 1984. A preliminary analysis of the dynamics of within-tree populations of Ips typographus (L.). Abstract. International Congress of Entomology, Proceedings, Hamburg 1984, 17:587.
- Mills, H. B. 1941. Montana insect pests 1939 and 1940. Twenty-eighth report of the State Entomologist [Scolytidae, p. 12]. Montana Agricultural Experiment Station, Bulletin 384. 28 p.
- Mills, N. J. 1983. The natural enemies of scolytids infesting conifer bark in Europe in relation to the biological control of Dendroctonus spp. in Canada. Biocontrol News and Information 4:305-326.
- Mills, N. J., and G. Hartl. 1984. A preliminary analysis of the dynamics of within-tree populations of Ips typographus (L.). Abstract. International Congress of Entomology, Proceedings, Hamburg 1984, 17:587.
- Mills, N. J., J. Schlup, and P. Fischer. 1984. Bark beetles (Dendroctonus, Pissodes). Work in Europe in 1984. Commonwealth Institute of Biological Control, European Station, Delemont, Switzerland. 14 p.
- Mills, J. R. 1988. Host location: an important consideration in the use of exotic natural enemies for the biocontrol of native scolytids . International Congress of Entomology, Proceedings 18:416.
- Mills, N. J. 1985. Some observation on the role of predation in the natural regulation of Ips typographus populations . Journal of Applied Entomology 99:209-215.
- Mills, N. J. 1986. A preliminary analysis of the dynamics of within tree populations of Ips typographus (L) (Coleoptera: Scolytidae) . Journal of Applied Entomology 102:402-416.
- Mills, N. J., and K. Kruger. 1988. Host location: an important factor in the use of exotic natural enemies for the biocontrol of native scolytids. Pages 321-328 in T. L. Payne and H. Saarenmaa, Integrated control of scolytid bark beetles. Virginia Polytechnic and State University, Blacksburg, Virginia. 355 p.
- Mills, N. J., and J. Schlup. 1989. The natural enemies of Ips typographus in central Europe: impact and potential use in biological control. Pages 131-146 in D. L. Kulhavy and M. C. Miller. Center for Applied Studies, School of Forestry, Stephen F. Austin State University, Nacogdoches, Texas. 255.
- Clark, E., and C. Mills. 1978. Effects of the season of the year and the soil on the amounts of soluable amino N and soluable carbohydrates in the inner bark of Pinus taeda . Florestal (Brasil) 9:40-44.
- Kruger, K., and N. Mills. 1990. Observations on the biology of three parasitoids of the spruce bark beetle, Ips typographus (Col, Scolytidae): Coeloides bostrychorum, Dendrosoter middendorfii (Hym, Braconidae) and Rhopalicus tutela (Hym, Pteromalidae) . Journal of Applied Entomology 110:281-291.
- Mills, N. 1991. Searching strategies and attack rates of parasitoids of the ash bark beetle (Lepersinus varius) and its relevance to biological control . Ecological Entomology 16:461-470.
- Mills, N., K. Krüger, and J. Schlup. 1991. Short-range host location mechanisms of bark beetle parasitoids . Journal of Applied Entomology 111:33-43.
- Moore, D., Y. Abraham, and N. Mills. 1990. Effects of competition in the coffee berry borer, Hypothenemus hampei (Ferrari) (Col, Scolytidae) . Journal of Applied Entomology 109:64-70.
- Dahlsten, D., and N. Mills. 1999. Biological control of forest insects. Pages 761-788 In T.S. Bellows and T.W. Fisher (eds.), Handbook of Biological Control. Academic Press, San Diego. 1046 pp.