Achievements
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Many years of work researching multinational firms culminated in a book on the role of multinationals in the international economy, and was published by the Massachusetts Institute of Technology press in the summer of 2002. While continuing to work on multinationals and the non-rivaled and non-excludable properties of knowledge capital in particular, he has more recently worked on a diverse set of issues including export-platform foreign direct investment, fragmentation and trade at the extensive margin, and selection and learning effects in multinational firms explaining their higher wages.