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Journal of the Bulgarian Geographical Society 46: 31-42
doi:
10.3897/jbgs.e89215
Received:
17 Jun 2022 | Approved:
19 Jul 2022 | Published:
25 Jul 2022
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Authors

Aleksandra Ravnachka
- Corresponding author
National Institute of Geophysics, Geodesy and Geography - Bulgarian Academy of Sciences, Sofia, Bulgaria

Velimira Stoyanova
- Corresponding author
National Institute of Geophysics, Geodesy and Geography - Bulgarian Academy of Sciences, Sofia, Bulgaria
Academic editor

Sofia University "St. Kliment Ohridski", 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.