Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Collins, C. W., W. D. Buchanan, R. R. Whitten, and C. H. Hoffmann. 1936. Bark beetles and other possible insect vectors of the Dutch elm disease (Ceratostomella ulmi (Schwarz) Buisman) . Journal of Economic Entomology 29:169-176.