Burkovsky, R. G.
Bronwald, I.
Andronikova, D.
Wehinger, B.
Krisch, M.
Jacobs, J.
Gambetti, D.
Roleder, K.
Majchrowski, A.
Filimonov, A. V.
Rudskoy, A. I.
Vakhrushev, S. B.
Tagantsev, A. K.
Article History
Received: 30 September 2016
Accepted: 20 December 2016
First Online: 30 January 2017
Competing interests
: The authors declare no competing financial interests.