Kovaleva, Elena G.
Molochnikov, Leonid S.
Stepanova, Darya P.
Pestov, Alexander V.
Trofimov, Dmitrii G.
Kirilyuk, Igor A.
Smirnov, Alex I.
Funding for this research was provided by:
U.S. Department of Energy (DE-FG02-02ER15354)
Russian Foundation for Basic Research (14-03-00898)
Program 211 of the Government of the Russian Federation (02.A03.21.0006)
State Tasks of the Ministry of Education (4.1626.2014/K)
State Tasks of the Ministry of Education (2014/239)
Article History
Received: 1 May 2016
Accepted: 14 October 2016
First Online: 4 November 2016
Compliance with Ethical standards
:
: The authors declare that they have no competing interests.