First Author:   Christian Pierdzioch Helmut Schmidt University c.pierdzioch@hsu-hh.de   Department of Economics, Holstenhofweg 85, P.O.B. 700822 Hamburg, 22008, Germany       Second Author: Jan C Rülke WHU -- Otto Beisheim School of Management Jan-C.Ruelke@whu.edu   Burgplatz 2, Burgplatz 2 Vallendar, 56179, Vallendar       Third Author: Georg Stadtmann University of Southern Denmark and European-University Viadrina Frankfurt (Oder) Stadtmann@europa-uni.de   Department of Economics, P.O.B. 1786 Frankfurt (Oder), 15207, Germany