Kutnyakhov, D.
Chernov, S.
Medjanik, K.
Wallauer, R.
Tusche, C.
Ellguth, M.
Nepijko, S. A.
Krivenkov, M.
Braun, J.
Borek, S.
Minár, J.
Ebert, H.
Elmers, H. J.
Schönhense, G.
Article History
Received: 12 February 2016
Accepted: 16 June 2016
First Online: 12 July 2016
Competing interests
: The authors declare no competing financial interests.