Kalebina, T. S.
Rekstina, V. V.
Article History
Received: 16 May 2019
Revised: 30 June 2019
Accepted: 30 June 2019
First Online: 16 December 2019
COMPLIANCE WITH ETHICAL STANDARDS
: The authors state that there is no conflict of interests.
: This article does not contain studies that use humans and animals as objects of research.