Milinski, Manfred
Hilbe, Christian http://orcid.org/0000-0001-5116-955X
Semmann, Dirk
Sommerfeld, Ralf
Marotzke, Jochem
Article History
Received: 14 October 2015
Accepted: 29 January 2016
First Online: 7 March 2016
Competing interests
: The authors declare no competing financial interests.