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Silva Balcanica 21(1): 91-112
doi:
10.3897/silvabalcanica.21.e54609
Received:
10 Mar 2020 | Approved:
12 Apr 2020 | Published:
30 Jun 2020
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Authors
Sofia University St. Kliment Ohridski, Sofia, Bulgaria
Sofia University St. Kliment Ohridski, Sofia, Bulgaria
Private entomologist, Sofia, Bulgaria
Science Naturali ed Ambientali, Roma, Italy
Institute of Biodiversity and Ecosystem Research, BAS, Sofia, Bulgaria
Forest Research Institute, BAS, Sofia, Bulgaria
Academic editor
Forest Research Institute, Sofia, Bulgaria
Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.