variable and sunk costs between exporters and importers across different categories of imports. In addition the authors …

This paper provides new evidence on the long-run relationship between exports and imports of the Iranian economy by … between imports and exports over the sample period, 1960-2007. This result confirms the finding of Arize (Imports and Exports …

. Secondly, the authors estimate the determinants of the extensive and intensive margins of exports and imports using dynamic … imports than for exports pointing to the existence of sunk costs in both activities. Moreover, past productivity does affect … the extensive margin of imports, but not of exports and the initial condition status is also only relevant for the import …