国际贸易的网络结构（英文版）——The Network Structure of International Trade
American Economic Review， 2014年第6期。
Abstract
I build a dynamic model of the formation of an international network of importers and
exporters. Firms can only export into markets in which they have a contact. They directly
search for new trading partners, but they can also use their existing network of contacts to
remotely search for new partners. This model explains (i) the cross-sectional distribution of the
number of foreign markets accessed by individual exporters, (ii) the cross-sectional geographic
distribution of foreign contacts, and (iii) the dynamics of firm level exports. I show that the
firm level dynamics of trade can explain the observed cross section of firm level exports. All
theoretical predictions are supported by the data.


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