Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Fargo, W. S., R. N. Coulson, P. E. Pulley, D. N. Pope, and C. L. Kelley. 1978. Spatial and temporal patterns of within-tree colonization by Dendroctonus frontalis (Coleoptera: Scolytidae) . Canadian Entomologist 110:1213-1232.