Chen, Natalie; Imbs, Jean; Scott, Andrew - Nationale Bank van België/Banque national de Belqique (BNB) - 2006
We present, extend and estimate a model of international trade with firm heterogeneity in the tradition of Melitz (2003 … prices, productivity levels and markups as functions of openness to trade at a sectoral level. The theory lends itself … naturally to a difference in differences estimation, with international differences in trade openness at the sector level …