Mikhailov, O. V.
Funding for this research was provided by:
Ministry of Education and Science of the Russian Federation (4.5784.2017/8.9)
Article History
Received: 27 November 2017
Accepted: 30 January 2018
First Online: 26 February 2018
Compliance with ethical standards
:
: The author declares that he has no conflict of interest.