Product Imitation, Product Differentiation and International Trade
用霍特林模型分析两家企业在两个相互依赖的市场中的产品定位与定价，发现产品模仿与无贸易、产品差异化与双向或单向贸易都可能成为均衡结果。
Using the Hotelling approach to product differentiation, this article derives the equilibrium product configurations and prices when two firms enter and sell in two interdependent markets separated by barriers to trade. It shows that product imitation and no trade as well as product differentiation with two-way or one-way trade are all consistent with the equilibrium. Copyright 1995 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.