Product Diversity, Economies of Scale, and International Trade
在开放经济中为垄断竞争模型推导出新的可检验含义，分析国际贸易如何影响企业规模、产品多样性及产能过剩，并与赫克歇尔-俄林模型进行比较。
The paper develops new testable implications for monopolistic competition in the open economy. Within a two-sector model we explore how international trade affects plant size, the degree of product diversity, and excess capacity. The analysis then focuses on how trade affects the degree of domestic and international concentration, intersectoral capital mobility, and output in the competitive sector. Finally, we compare the model to the traditional Hecksher-Ohlin model and find that many of the central propositions still hold.