A Generalized Model of Pricing for Homogeneous Goods under Imperfect Information
推广了Wilde和Schwartz（1979）的模型，允许需求曲线向下倾斜和平均成本曲线呈U形，证明基本结论仍成立，并发现比较购物者的临界比例随需求弹性增大或成本弹性减小而下降，且不完全信息导致的非竞争结果在福利上不低于垄断竞争均衡。
This paper generalizes the model developed in Wilde and Schwartz (1979) to allow downward sloping demand curves and u-shaped average cost curves. It shows that the basic qualitative conclusions of Wilde and Schwartz still hold. Moreover, it shows that the critical proportion of comparison shoppers needed to generate a competitive equilibrium falls as demand becomes more elastic or average costs become more inelastic. Finally, it shows that when imperfect information generates non-competitive outcomes, they are bounded below, in welfare terms, by the monopolistically competitive equilibrium.