Geographic concentration and establishment size: analysis in an alternative economic geography model
大城市服务业企业规模大于全国平均，制造业企业规模则更小。本文用替代标准Dixit-Stiglitz结构的经济地理模型解释这些现象，模型假设企业在本地市场有垄断力但在出口市场是价格接受者。
Big cities specialize in services rather than manufacturing. Big-city establishments in services are larger than the national average, whereas those in manufacturing are smaller. We propose an explanation of these and other related facts. The theory is developed in an economic geography model that is an alternative to the standard Dixit–Stiglitz structure. In our tractable structure, which has potentially wider application, firms have monopoly power in local markets but are price takers in export markets.