Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Harding, S., and H. P. Ravn. 1982. Dansek fund af de tre elmebarkbillearter i relation til elmesygen [Danish records of the three species of elm bark beetles in relation to Dutch elm disease] . Tidsskrift for Planteavl 86:477-495.