Funding for this research was provided by:
Bulgarian National Science Fund (KP-06N42/2)
National Academy of Sciences of Ukraine (0117U000117)
Institute of Geophysics of the Czech Academy of Sciences
Article History
Received: 20 December 2022
Accepted: 2 August 2024
First Online: 2 September 2024
Declarations
:
: The authors have not disclosed any competing interests.