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Journal of the Bulgarian Geographical Society 47: 45-51
doi:
10.3897/jbgs.e98660
Received:
23 Oct 2022 | Approved:
11 Dec 2022 | Published:
14 Dec 2022
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Authors

Sofia University, Sofia, Bulgaria

Borislav Grigorov
- Corresponding author
Sofia University, Sofia, Bulgaria

Sofia University, Sofia, Bulgaria
Academic editor

Sofia University "St. Kliment Ohridski", Sofia, Bulgaria
Conflict of interest
The authors have declared that no competing interests exist.
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