Michaelis, Jochen; Debus, Martin - 2009
Business Administration &
Economics • Universitätsstr. 24, D-35032 Marburg
Tel: ++49-6421-2823091, Fax: ++49-6421-2823088 e …
Joint Discussion Paper
Series in Economics
by the Universities of
Aachen · Gießen · Göttingen
Kassel · Marburg …�rzburg.
yCorresponding author: Department of Economics, University of Kassel, Nora-Platiel-Str. 4,
D-34127 Kassel, Germany; Tel.: + 49 (0 …