- 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.
- Byers, J. A., H. E. Hogberg, C. R. Unelius, G. Birgersson, and J. Lofqvist. 1989. Structure-activity studies on aggregation pheromone components of Pityogenes chalcographus (Coleoptera: Scolytidae): all stereoisomers of chalcogran and methyl-2 4-decadienoate . Journal of Chemical Ecology 15:685-696.
- Hogberg, H. E., E. Hedenstrom, R. Isaksson, and A. B. Wassgren. 1987. Preparation of the four stereoisomers of chalcogran, pheromone components of Pityogenes chalcographus and of both enantiomers of gamma-caprolactone, pheromone component of Trogoderma granarium . Acta Chemica Scandinavica, B (Organic Chemistry and Biochemistry) 41:694-697.
- 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.