Shirinyan, Aram https://orcid.org/0000-0002-6119-7084
Wilde, Gerhard https://orcid.org/0000-0001-8001-5998
Bilogorodskyy, Yuriy https://orcid.org/0000-0002-8534-179X
Funding for this research was provided by:
DAAD (91730764 of Program 57440915)
DAAD (German Academic Exchange Service) in Kiev (91617129 of Program 57210259)
Article History
Received: 19 March 2020
Accepted: 7 May 2020
First Online: 23 May 2020
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.