Bertram, Karl
Agafonov, Dmitry E.
Liu, Wen-Ti
Dybkov, Olexandr
Will, Cindy L.
Hartmuth, Klaus
Urlaub, Henning
Kastner, Berthold
Stark, Holger
Lührmann, Reinhard
Article History
Received: 18 November 2016
Accepted: 4 January 2017
First Online: 11 January 2017
Competing interests
: The authors declare no competing financial interests.