First publ. in: The Economic Journal 120 (2010), 543, pp. 215-243 DOI: 10.1111/j.1468-0297.2009.02297.x
The definitive version is available at www3.interscience.wiley.com
Konstanzer Online-Publikations-System (KOPS) URN: http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-127581
URL: http://kops.ub.uni-konstanz.de/volltexte/2011/12758