Rosewich, Hendrik http://orcid.org/0000-0003-4692-5511
Waterham, Hans
Poll-The, Bwee Tien
Ohlenbusch, Andreas
Gärtner, Jutta
Article History
Received: 10 March 2014
Revised: 15 September 2014
Accepted: 14 October 2014
First Online: 19 November 2014
Competing interests
: The authors declare no conflict of interest.