Evstratova, E. S.
Korolev, V. G.
Petin, V. G.
Article History
Received: 29 August 2018
Revised: 18 January 2019
Accepted: 22 January 2019
First Online: 7 August 2019
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interest. This article does not contain any research using animals as objects. This article does not contain any research involving human subjects as objects of research.