Recent trade models with heterogenous firms have considerable consequences on the interpretation of gravity equations. Chaney (2008) shows that the effect of distance on trade margins incorporates three parameters: the elasticity of substitution between goods, the elasticity of trade costs with...

Firm-level regressions show that Champagne producers that receive better ratings from wine guides also export to more markets, charge higher prices, and sell more in each market. Our method corrects for a severe selection bias predicted by the model. By using direct measures of quality, we can...

This article draws a picture of the current status of the liberalization process in the Euro-Mediterranean region, and reviews existing studies of this process. Economic integration among the South-Med countries (SMCs) has started in the middle 1990s through intra-regional agreements (GAFTA,...