The impact of international trade on firm productivity is tested by accounting for firms' import as well as export … the Olley and Pakes (1996) estimator, taking account of a four-category trade status. Selection of the most productive … Difference in Differences, are used to calculate productivity improvements from entering into international trade. These …

This paper presents empirical evidence on the diversification process concerning Polish exports (1994-2010), compared … to European and global samples of countries. It analyzes both the commodity structure of Polish trade and the … geographical diversification of Poland's trading partners. The analysis draws on highly disaggregated data on exports (HS 6digit …