GeoDist makes available the exhaustive set of gravity variables used in Mayer and Zignago (2005). GeoDist provides several geographical variables, in particular bilateral distances measured using citylevel data to assess the geographic distribution of population inside each nation. We have...

This paper proposes studying export frequency as an additional margin of international trade. While extensive margins of products and destination define the scope of firm’s export, export shipment frequency is determined by sale method choice and cost structure of the trade technology. We...