Funding for this research was provided by:
Russian Science Support Foundation (19-41-02002)
Russian Science Foundation (19-41-02002)
Slovak Academic Information Agency (VEGA-SAV No. 2/0153/16)
Article History
Received: 4 June 2019
Accepted: 14 September 2019
First Online: 25 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.