Ubbelohde, Niels
Hohls, Frank
Kashcheyevs, Vyacheslavs http://orcid.org/0000-0002-4869-8837
Wagner, Timo
Fricke, Lukas
Kästner, Bernd
Pierz, Klaus
Schumacher, Hans W.
Haug, Rolf J.
Article History
Received: 28 April 2014
Accepted: 21 October 2014
First Online: 1 December 2014
Competing interests
: The authors declare no competing financial interests.