Funding for this research was provided by:
Russian Foundation for Basic Research (18-02-00856, 18-02-00856)
Russian Academy of Sciences (12 ``Problems of Origin and Evolution of the Universe'')
Russian Academy of Sciences (12 ``Problems of Origin and Evolution of the Universe'')
Article History
Received: 4 February 2019
Accepted: 6 March 2019
First Online: 22 March 2019
Disclosure of Potential Conflicts of Interest
: The authors declare that they have no conflicts of interest.