Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Birch, M. C., P. E. Tilden, D. L. Wood, L. E. Browne, J. C. Young, and R. M. Silverstein. 1977. Biological activity of compounds isolated from air condensates and frass of the bark beetle, Ips confusus . Journal of Insect Physiology 23:1373-1376.