Peters, Lars
Ghosh, Saurabh
Sanyal, Biplab
van Dijk, Chris
Bowlan, John
de Heer, Walt
Delin, Anna
Di Marco, Igor
Eriksson, Olle
Katsnelson, Mikhail I.
Johansson, Börje
Kirilyuk, Andrei
Article History
Received: 18 February 2015
Accepted: 24 September 2015
First Online: 22 January 2016
Competing interests
: The authors declare no competing financial interests.