Zuse Institute Berlin, affiliation not provided to SSRN, Humboldt University of Berlin, University of Trier, Humboldt University of Berlin, Humboldt University of Berlin, Humboldt University of Berlin, Newcastle University, Humboldt University of Berlin, Humboldt University of Berlin, Humboldt University of Berlin, Humboldt University of Berlin, Humboldt University of Berlin and Humboldt University of Berlin