1. Chemical Ecology; Department of Plant Protection Biology; Swedish University of Agricultural Sciences; P.O. Box 102 SE-230 53 Alnarp Sweden
2. Institute of Forest Ecology; Slovak Academy of Sciences; Štúrova 2 960 53 Zvolen Slovakia
3. Department of Forest Protection and Entomology; Faculty of Forestry and Wood Sciences; Czech University of Life Sciences; Kamýcká 1176 165 21 Praha 6 - Suchdol Czech Republic
4. Jilin Provincial Academy of Forestry Sciences; 3528 Linhe Street Changchun Jilin Province 130033 China