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Free Trade, Oxford Companion to International Relations (2014)

Remembering Emma Lazarus, Society, (March/April 2010).

What's the Big Idea? The Third Generation of Policies for Economic Growth with Lant Pritchett, Economia (Fall 2002).

Does Indonesia Have a 'Low Pay' Civil Service? with Deon Filmer, Bulletin of Indonesian Economic Studies (2001).

Why Not Africa? with Richard Freeman, NBER Working Paper No. W6942 (February 1999).