Ruhr Economic Papers
Published by
Ruhr-Universitat Bochum (RUB), Department of Economics
Universitatsstraβe 150, 44801 Bochum, Germany
Technische Universitat Dortmund, Department of Economic and Social Sciences
Vogelpothsweg 87, 44227 Dortmund, Germany
Universitat Duisburg-Essen, Department of Economics
Universitatsstraβe 12, 45117 Essen, Germany
Rheinisch-Westfalisches Institut für Wirtschaftsforschung (RWI Essen)
Hohenzollernstrasse 1/3, 45128 Essen, Germany
Editors:
Prof. Dr. Thomas K. Bauer
RUB, Department of Economics
Empirical Economics
Phone: +49 (0) 234/3 22 83 41, e-mail: [email protected]
Prof. Dr. Wolfgang Leininger
Technische Universitat Dortmund, Department of Economic and Social Sciences
Economics - Microeconomics
Phone: +49 (0) 231 /7 55-32 97, email: [email protected]
Prof. Dr. Volker Clausen
University of Duisburg-Essen, Department of Economics
International Economics
Phone: +49 (0) 201/1 83-36 55, e-mail: [email protected]
Prof. Dr. Christoph M. Schmidt
RWI Essen
Phone: +49 (0) 201/81 49-227, e-mail: [email protected]
Editorial Office:
Joachim Schmidt
RWI Essen, Phone: +49 (0) 201/81 49-292, e-mail: [email protected]
Ruhr Economic Papers #58
Responsible Editor: Christoph M. Schmidt
All rights reserved. Bochum, Dortmund, Duisburg, Essen, Germany, 2008
ISSN 1864-4872 (online) - ISBN 978-3-86788-061-9
The working papers published in the Series constitute work in progress circulated to
stimulate discussion and critical comments. Views expressed represent exclusively
the authors’ own opinions and do not necessarily reflect those of the editors.
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