Plümper, Oliver http://orcid.org/0000-0001-9726-0885
Botan, Alexandru
Los, Catharina
Liu, Yang
Malthe-Sørenssen, Anders
Jamtveit, Bjørn
Article History
Received: 10 January 2017
Accepted: 19 July 2017
First Online: 14 August 2017
Competing interests
: The authors declare no competing financial interests.