This paper selectively surveys the recent literature on price discrimination. The focus is on three aspects of pricing decisions: the information about customers available to firms; the instruments firms can use in the design of their tariffs; and the ability of firms to commit to their pricing...

The present paper analyzes a network formation problem, mainly based on the framework presented in Bala and Goyal (2000). We depart from their assumptions in two crucial aspects. On one hand, we assume that connecting to an agent pays of not only for the number of connections that the agent can...