Girma, Sourafel; Greenaway, David; Kneller, Richard - In: Review of International Economics 12 (2004) 5, pp. 855-866
Exporting involves sunk costs, so some firms export whilst others do not. This proposition derives from a number of models of firm behavior and has been exposed to microeconometric analysis. Evidence from the latter suggests that exporting firms are generally more productive than nonexporters....