This book provides an updated overview of the recent progress in the theoretical study of third-degree price discrimination. It is a marketing tactic and is said to be present if the unit price is different across different groups of buyers. Its welfare evaluation is often difficult because it...

In the age of outsourcing, it is easy to forget that outsourcing is simply one manifestation of the division of labor. Adam Smith's dictum that the division of labor is limited by the extent of the market has created difficulties when applied to a division of labor among firms (rather than...

We develop an equilibrium model of industrial structure in which the organization of firms is endogenous. Differentiated consumer products can be produced either by vertically integrated firms or by pairs of specialized companies. Production of each variety of consumer goods requires a unique,...