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α: calibrated so average coauthorship-adjusted count equals average raw count
Motivated by empirical evidence I uncover on the dynamics of French firms exports, I offer a novel theory of trade frictions. Firms only export into markets where they have a contact. They directly search for new trading partners, but also use their existing network of contacts to remotely search for new partners. I characterize the dynamic formation of an international network of exporters in this model. I structurally estimate this model on French data and confirm its predictions regarding the distribution of the number of foreign markets accessed by exporters and the geographic distribution of exports.