Discrete Equilibrium Price Dispersion
求解了一个包含定价企业和搜寻消费者的均衡模型，得出关于企业成本差异、消费者搜寻成本和税收如何影响市场价格均值与方差的比较静态预测，并发现企业需求取决于其价格与市场平均价格之差。
An explicit solution of an equilibrium model with price-setting firms and searching customers makes possible a number of comparative-statics predictions about how cost differences among firms, search costs of customers, and taxes will affect the mean and variance of the distribution of market prices. Another implication of the model is that a firm's demand depends on the difference between its price and the average price in the market.