Charnukha, A.
Post, K. W.
Thirupathaiah, S.
Pröpper, D.
Wurmehl, S.
Roslova, M.
Morozov, I.
Büchner, B.
Yaresko, A. N.
Boris, A. V.
Borisenko, S. V.
Basov, D. N.
Article History
Received: 14 July 2015
Accepted: 13 November 2015
First Online: 5 January 2016
Competing interests
: The authors declare no competing financial interests.