Mitrofanov, A. V.
Voronin, A. A.
Sidorov-Biryukov, D. A.
Pugžlys, A.
Stepanov, E. A.
Andriukaitis, G.
Flöry, T.
Ališauskas, S.
Fedotov, A. B.
Baltuška, A.
Zheltikov, A. M.
Article History
Received: 26 November 2014
Accepted: 9 January 2015
First Online: 17 February 2015
Competing interests
: The authors declare no competing financial interests.