We study optimal auctions when contacting prospective bidders is costly and the biddersï¾’ values are correlated. Although full surplus extraction is in general impossible, we can construct a search mechanism that fully extracts the surplus with an arbitrarily high probability.

Le terme `logiciel libre' désigne à la fois un bien -- le logiciel -- indispensable au fonctionnement des sociétés modernes informatisées, et un mode de production et de distribution -- libre. Ce mode de production et de distribution est suffisamment original pour poser des problèmes...

We consider a simple two period model where consumers have different switching costs. Before the market opens, there was an incumbent who sold to all consumers. We identify the equilibrium both with Stackelberg and Bertrand competition and show how the presence of low switching cost consumers...

We consider a simple two period model where consumers have different switching costs. Before the market opens, there was an incumbent who sold to all consumers. We identify the equilibrium both with Stackelberg and Bertrand competition and show how the presence of low switching cost consumers...

We consider a simple two period model where consumers have different switching costs. Before the market opens, there was an incumbent who sold to all consumers. We identify the equilibrium both with Stackelberg and Bertrand competition and show how the presence of low switching cost consumers...

We consider a simple two period model where consumers have different switching costs. Before the market opens, there was an incumbent who sold to all consumers. We identify the equilibrium both with Stackelberg and Bertrand competition and show how the presence of low switching cost consumers...

This paper discusses the way in which the economic literature has solved Williamson?s selective intervention puzzle: why is that vertical integration, which gives the purchasing firm more control over its trading partner, not always more profitable than vertical separation? I argue that all the...

Bringing scholars and policymakers to the frontiers of research and addressing the critical issues of the day, the book presents original important new theoretical and empirical results. The distinguished contributors include: P. Agrel, K. Alexander, J. Crémer, X. Dassiou, G. Deltas, F. Etro,...