Opinions expressed in this paper are those of the author and do not necessarily reflect
views of the institute.
IMPRESSUM
© DIW Berlin, 2009
DIW Berlin
German Institute for Economic Research
Mohrenstr. 58
10117 Berlin
Tel. +49 (30) 897 89-0
Fax +49 (30) 897 89-200
http://www.diw.de
ISSN print edition 1433-0210
ISSN electronic edition 1619-4535
Available for free downloading from the DIW Berlin website.
Discussion Papers of DIW Berlin are indexed in RePEc and SSRN.
Papers can be downloaded free of charge from the following websites:
http://www.diw.de/english/products/publications/discussion papersZ27539.html
http://ideas.repec.Org/s/diw/diwwpp.html
http://papers.ssm.com/sol3/JELJOUR Results.cfm?form name=joumalbrowse&joumal id=1079991