Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Flamm, R. O., T. L. Wagner, S. P. Cook, P. E. Pulley, R. N. Coulson, and T. M. McArdle. 1987. Host colonization by cohabiting Dendroctonus frontalis, Ips avulsus, and I. calligraphus (Coleoptera: Scolytidae). Environmental Entomology 16: 390-399.