Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Bakke, A. 1993. Biller som tiltrekkes til graner under angrep av granbarkbillen Ips typographus. [Beetles attracted to Norway spruce under attack by Ips typographus]. Norsk Institutt for Skogforskning, Institutt for Skogfag. 24 p.