Stoyanov, Lyubomir https://orcid.org/0000-0002-2723-8639
Maleshkov, Georgi
Stefanov, Ivan
Paulus, Gerhard G.
Dreischuh, Alexander
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (PA 730/7)
Ministry of Education and Science (D01-401/18.12.2020)
Friedrich-Schiller-Universität Jena
Article History
Received: 5 May 2021
Accepted: 2 November 2021
First Online: 7 December 2021
Declarations
:
: The authors declare that they have no conflict of interest.