Edelhoff, Daniel
Walczak, Lars
Frank, Frauke
Heil, Marvin
Schmitz, Inge
Weichert, Frank
Suter, Dieter
Funding for this research was provided by:
Mercator Research Center Ruhr (PR-2012-0046)
Mercator Research Center Ruhr (PR-2012-0046)
Publication History
received: 2015-01-08
revised: 2015-08-12
accepted: 2015-08-17
published: 2015-09-08