- Birgersson, G., F. Schlyter, J. Lofqvist, and G. Bergstrom. 1984. Quantitative variation of pheromone components in the spruce bark beetle Ips typographus from different attack phases. Journal of Chemical Ecology 10:1029-1055.
- Birgersson, G., F. Schlyter, G. Bergstrom, and J. Lofqvist. 1984. Pheromone components in the bark beetle Ips typographus reflecting amounts and chirality of host compounds. Abstract. International Congress of Entomology, Proceedings, Hamburg 1984, 17:590.
- Lanne, B. S., F. Schlyter, J. Lofqvist, A. Leufven, G. Bergstrom, and J. A. Byers. 1984. Similarities in odor composition of Tomicus piniperda and T. minor and differences in their behavioral response to these odors. Abstract. International Congress of Entomology, Proceedings, Hamburg 1984, 17:593.
- Leufven, A., G. Bergstrom, and E. Falsen. 1984. Interconversion of verbenols and verbenone by identified yeasts isolated from the spruce bark beetle Ips typographus . Journal of Chemical Ecology 10:1349-1362.
- Leufven, A., G. Bergstrom, E. Falsen, and L. Nehls. 1984. On the role of associated microorganisms in the chemical communication of the spruce bark beetle, Ips typographus. Abstract. International Congress of Entomology, Proceedings, Hamburg 1984, 17:589.
- Birgersson, G., and G. Bergstrom. 1989. Volatiles released from individual spruce bark beetle entrance holes: quantitative variations during the first week of attack . Journal of Chemical Ecology 15:2465-2484.
- Byers, J. A., G. Birgersson, J. Lofqvist, and G. Bergstrom. 1988. Synergistic pheromones and monoterpenes enable aggregation and host recognition by a bark beetle . Naturwissenschaften 75:153-155.
- Byers, J. A., B. S. Lanne, J. Lofqvist, F. Schlyter, and G. Bergstrom. 1985. Olfactory recognition of host-tree susceptibility by pine shoot beetles . Naturwissenschaften 72:32-326.
- Lanne, B. S., P. Ivarsson, P. Johnson, G. Bergstrom, and A. B. Wassgren. 1989. Biosynthesis of 2 methyl-3-buten-2-01, a pheromone component of Ips typographus (Coleoptera: Scolytidae) . Insect Biochemistry 19:163-168.
- Lanne, B. S., F. Schlyter, J. A. Byers, J. Lofqvist, A. Leufven, G. Bergstrom, J. N. C. V. d. Pers, R. Unelius, P. Baeckstrom, and T. 1987. Differences in attraction to semiochemicals present in sympatric pine shoot beetles, Tomicus minor and T piniperda . Journal of Chemical Ecology 13:1045-1067.
- Leufven, A., G. Bergstrom, and E. Falsen. 1988. Oxygenated monoterpenes produced by yeasts isolated from Ips typographus (Coleoptera: Scolytidae) and grown in phloem medium . Journal of Chemical Ecology 14:353-362.
- Schlyter, F., G. Birgersson, J. A. Byers, J. Lofqvist, and G. Bergstrom. 1987. Field response of spruce bark beetle, Ips typographus, to aggregation pheromone candidates . Journal of Chemical Ecology 13:701-716.
- Birgersson, G., J. Byers, G. Bergstrom, and J. Lofqvist. 1990. Production of pheromone components, chalcogran and methyl(e,z)-2,4-decadiendate, in the spruce engraver Pityoenes chalcographus . Journal of Insect Physiology 36:391-395.
- Byers, J., G. Birgersson, J. Lofqvist, M. Appelgren, and G. Bergstrom. 1990a. Isolation of pheromone synergists of bark beetles, Pityogenes chalcographus, from complex insect-plant odors by fractionation and subtractive-combination bioassay . Journal of Chemical Ecology 16:861-876.