Wofford, Joseph M.
Nakhaie, Siamak
Krause, Thilo
Liu, Xianjie
Ramsteiner, Manfred
Hanke, Michael
Riechert, Henning
J. Lopes, J. Marcelo
Article History
Received: 7 October 2016
Accepted: 25 January 2017
First Online: 27 February 2017
Competing interests
: The authors declare no competing financial interests.