- Ivarsson, P., C. Tittiger, C. Blomquist, C. Borgeson, S. J. Seybold, G. J. Blomquist, and H. E. Hogberg. 1998. Pheromone precursor synthesis is localized in the metathorax of Ips paraconfusus Lanier (Coleoptera: Scolytidae). Naturwissenschaften, Berlin 85:507-511.
- Tittiger, C., G. J. Blomquist, P. Ivarsson, C. E. Borgeson, and S. J. Seybold. 1999. Juvenile hormone regulation of HMG-R gene expression in the bark beetle Ips paraconfusus (Coleoptera: Scolytidae): implications for male aggregation pheromone biosynthesis. Cellular and Molecular Life Sciences 55:121-127.
- Ivarsson, P., G. J. Blomquist, and S. J. Seybold. 1997. In vitro production of the pheromone intermediates ipsdienone and ipsenone by the bark beetles Ips pini (Say) and I paraconfusus Laier (Coleoptera: Scolytidae). Naturwissenschaften, Berlin 84:454-457.
- 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.
- Ivarsson, P., F. Schlyter, and G. Birgersson. 1993. Demonstration of de novo pheromone biosynthesis in Ips duplicatus (Coleoptera: Scolytidae): inhibition of ipsdienol and E- myrcenol production by compactin. 1993. Insect Biochemistry and Molecular Biology 23:655-662.
- Ivarsson, P. 1995. The pheromone systems of the spruce bark beetles, Ips duplicatus and I. typographus: biosynthesis and regulation. Disseration, Göteborg University, Göteborg, Sweden.
- Ivarsson, P., and G. Birgersson. 1995. Regulation and biosynthesis of pheromone components in the double spined bark beetle Ips duplicatus (Coleoptera: Scolytidae) . Journal of Insect Physiology 41:843-849.
- Ivarsson, P., G. Blomquist, and S. Seybold. 1997. In vitro production of the pheromone intermediates ipsdienone and ipsenone by the bark beetles Ips pini (Say) and / paraconfusus Lanier (Coleoptera: Scolytidae) . Naturwissenschaften 84:454-457.
- Ivarsson, P., C. Tittiger, C. Blomquist, C. Borgeson, S. Seybold, G. Blomquist, and H.-E. Högberg. 1998. Pheromone precursor synthesis is localized in the metathorax of Ips paraconfusus Lanier (Coleoptera: Scolytidae) . Naturwissenschaften 85:507-511.
- Tittiger, C., G. Blomquist, P. Ivarsson, C. Borgeson, and S. Seybold. 1999. Juvenile hormone regulation of HMG-R gene expression in the bark beetle Ips paraconfusus (Coleoptera: Scolytidae): implications for male aggregation pheromone biosynthesis . Cellular and Molecular Life Sciences 55:121-127.