Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Langstrom, B., C. Hellqvist, and B. Ehnstrom. 1984. Fordelning och produktion av margborrar i tallvaltor [Distribution and production of Tomicus piniperda in pine wood stacks] . Sveriges Skogsvardsforbunds Tidskrift 82:23-35.