Comparative advantage and the welfare impact of European integration
用多部门李嘉图模型分析75国数据，发现西欧从与东欧贸易一体化中平均福利增益0.1%，且增益大小取决于比较优势的差异程度。
This paper investigates the welfare gains from European trade integration, and the role of comparative advantage in determining the magnitude of those gains. We use a multi-sector Ricardian model implemented on 75 countries, and compare welfare in the 2000s to a counterfactual scenario in which Eastern European countries are closed to trade. For Western European countries, the mean welfare gain from trade integration with Eastern Europe is 0.1%, ranging from zero for Portugal to 0.35% for Austria. Comparative advantage is a key determinant of the variation in these welfare gains: countries whose comparative advantage is most similar to Eastern Europe tend to gain the least, while countries with technology most different from Eastern Europe gain the most.