Frolov, Yaroslav
Stolbchenko, Mykhailo http://orcid.org/0000-0002-2500-7167
Grydin, Olexandr
Makeeva, Hanna
Tershakovec, Michael A.
Schaper, Mirko
Funding for this research was provided by:
Deutscher Akademischer Austauschdienst
Article History
Received: 15 November 2017
Accepted: 11 July 2018
First Online: 20 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.