This paper compares the decisions of s single product oligopolists and of a multiproduct monopolist with respect to pricing, product choice, location and entry, within a 3 stage game on the part of the oligopolists. It turns out that from the consumer's point of view a monopolistic versus...

We develop a model of search among substitutes for the best combination of commodity variant and price, in which the structure of search costs can be manipulated by the suppliers of these variants, e.g. by joining an existing market or opening a new one. We analyse the subgame perfect equilibria...

We develop a model of search among substitutes for the best combination of commodity variant and price, in which the structure of search costs is manipulable by the suppliers of these variants, e.g., by joining an existing market or opening a new one. We analyze the subgame-perfect equilibria...

[fre] On analyse dans ce papier les choix de localisation, les offres de salaires et les demandes d'inputs de deux entreprises qui échangent des inputs intermédiaires et se concurrencent sur un marché spatial du travail. Le concept de sous-jeu parfait dans un jeu à plusieurs étapes de...