Pertsau, D. Yu.
Doudkin, A. A.
Article History
Received: 15 January 2020
Revised: 16 January 2020
Accepted: 16 January 2020
First Online: 19 June 2020
COMPLIANCE WITH ETHICAL STANDARDS
: This study does not contain any research involving humans or animals as research objects.
: The authors declare that they have no conflict of interest.