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Hangzhou: Zhejiang University Press, 2013 ; Berlin; Heidelberg [u.a.]: Springer, 2013
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Cheltenham, Glos [u.a.]: Elgar, 1999
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Paris: OECD/IEA, 1999
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Paris: OECD, 1997
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Mannheim: ZEW, 2012
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Cambridge: Univ. of Cambridge, Dep. of Applied Economics, Faculty of Economics, 2008
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Cambridge, Mass: National Bureau of Economic Research, November 2023