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Funding Information:
Remark: This paper is part of the project “Exports and Productivity in Lower Saxonian Manufacturing Firms” financially supported by the Ministry of Science and Culture of Lower Saxony. Special thanks go to the Statistical Office of Lower Saxony, and especially to Uwe Rode, for providing us the access to the confidential micro level data and running our Stata do-files. Earlier versions of the paper were presented at workshops on The Microeconometrics of International Firm Activities at Lueneburg University in September 2006, on Exports and Productivity – An International Comparison at the University of Nottingham in March 2007, on Regional and Mirco-Level Effects of Globalisation at the Institute for Applied Economic Research in Tübingen in July 2007, at the 34th EARIE Annual Conference in Valencia in September 2007, and at Christian-Albrechts-University Kiel in June 2007; comments from participants and an anonymous referee are gratefully acknowledged. Please address correspondence to Joachim Wagner, Leuphana University of Lueneburg, Institute of Economics, Campus 4.210, D-21332 Lüneburg, Germany; e-mail: wagner@leuphana.de