Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Perttunen, V., E. Kangas, and H. Oksanen. 1968. The mechanisms by which Blastophagus piniperda L. (Col., Scolytidae) reacts to the odour of an attractant fraction isolated from pine phloem. Annales Entomologici Fennici 34(4): 205-222.