- Klimetzek, D., J. Kohler, J. P. Vite, and U. Kohnle. 1986. Dosage response to ethanol mediates host selection by "secondary" bark beetles. Naturwissenschaften 73270-272.
- Kohler, J. 1992. Anmerkungen zur Kaferfaune der Rheinprovinz VI--Bermerkenswerte Neu- und Wiederfunde (Ins, Col). Mitteilungen der Arbeitsgemeinschaft Rheinisch Koleopterologen (Bonn) 2123-130.
- Bousfield, W. E., M. D. McGregor, and S. Kohler. 1973. Mountain pine beetle impact survey on the Ninemile District, Lolo National Forest and surrounding state and private lands. United States Department of Agriculture, Forest Service, Northern Region, Insect and Disease Report 73-7. 4 p.
- Dewey, J. E., H. E. Meyer, R. C. Lood, and S. Kohler. 1974. A pine butterfly impact survey on the Bitterroot National Forest and state of Montana federal lands, 1973. United States Department of Agriculture, Forest Service, Division of State and Private Forestry, Northern Region, Report 1:74-12. 4 p.
- Kohler, R. 1949. Die grosse Wurmtrocknis . Allgemeine Forstz. 4:125-126.
- Kohler, S. 1976. Workshop: Detection, monitoring, and survey methods. Pages 77-88 in Twenty-seventh annual Western Forest Insect Work Conference, Proceedings, Wemme, Oregon, 1-4 March 1976. Intermountain Forest and Range Experiment Station, Ogden, Utah. 136 p.
- Kohler, S., and O. Dooling. 1978. Detection survey for the smaller European elm bark beetle in Montana using pheromone-baited sticky traps. Montana Division of Forestry, Insect and Disease Report 78-1.
- McGregor, M. D., D. R. Hamel, and S. Kohler. 1978. Status of mountain pine beetle infestation, Glacier National Park and Glacier View Ranger District, Flathead National Forest, Montana, 1977. United States Department of Agriculture, Forest Service, Northern Region, State and Private Forestry, Report 78-6. 14 p.
- McGregor, M. D., D. R. Hamel, R. C. Lood, H. E. Meyer, and S. Kohler. 1975. Evaluation of mountain pine beetle infestations, Lazier and Meadow Creek Drainages, Plains District, Lolo National Forest, Montana, 1975. United States Department of Agriculture, Forest Service, Northern Region, Report 75-17. 11 p.
- McGregor, M. D., and S. Kohler. 1973. Evaluation of mountain pine beetle infestation, Wolf Mountains, Crow Indian Reservation, Montana, 1973. United States Department of Agriculture, Forest Service, Northern Region, Report 73-28. 5 p.
- McGregor, M. D., S. Kohler, and G. Ferry. 1974. Evaluation of mountain pine beetle infestations, Wolf Mountains, Crow Indian Reservation, Montana, 1973. United States Department of Agriculture, Forest Service, Northern Region, Report 74-6. 7 p.
- Gibson, K. E., S. K. Hagle, and S. Kohler. 1987. Montana forest pest conditions and program highlights, 1986. United States Department of Agriculture, Forest Service, Northern Region, Missoula, Montana, Cooperative Forestry and Pest Management Report 87-2. 29 p.
- Klimetzek, D., J. Kohler, S. Krohn, and W. Francke. 1989. Das Pheromon-System des Waldreben-Borkenkafers Xylocleptes bispinus Duft. (Col., Scolytidae) [The pheromone system of the Clematis bark beetle] [English summary]. Journal of Applied Entomology 107: 304-309.
- Kohler, S., O. J. Dooling, and W. E. Bousfield. 1985. Montana forest pest conditions and program highlights, 1984. United States Department of Agriculture, Forest Service, Northern Region, Missoula, Montana, Cooperative Forestry and Pest Management Report 85-2. 23 p.
- Tunnock, S., O. J. Dooling, and S. Kohler. 1984. Montana forest pest conditions and program highlights, 1983. United States Department of Agriculture, Forest Service, Northern Region, Missoula, Montana, Cooperative Forestry and Pest Management Report 84-2. 31 p.
- Köhler, F. 1992. Anmerkungen zur Käferfaune der Rheinprovinz VI—Bemerkenswerte Neuund Wiederfunde (Ins, Col) . Mitteilungen der Arbeitsgemeinschaft Rheinisch Koleopterologen (Bonn) 2:123-130.
- Schopf, R., O. Krausse, and U. Kohler. 1995. Saisonale Veranderungen von Lipiden und Aminosauren beim Buchdrucker Ips typographus (Col, Scolytidae) [Seasonal variation of lipids and amino acids among the European spruce bark beetle Ips typographus]. Mitteilungen der Deutschen Gesellschaft für allgemeine und angewandte Entomologie 10:47-50.