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First Author:
 
Peter Kannen
Helmut-Schmidt-University Hamburg
peter.kannen@hsu-hh.de
 
 
 
 

Second Author:

Julian Donaubauer
Helmut-Schmidt-University Hamburg
donaubaj@hsu-hh.de
 
 
 
 

Third Author:

Dierk Herzer
Helmut-Schmidt-University Hamburg
herzer@hsu-hh.de