“...We prove that a sufficient condition for the core existence in a n-firm vertically differentiated market is that the qualities of firms’ products are...”

“...In this paper, we extend the concept of stability to vertical collusive agreements involving downstream and upstream firms, using a setup of successive Cournot...”

“...We explore a variant of the Hotelling model which allows to nest horizontal and vertical differentiation into a unified setup whose key parameter is the...”

“...We model platform competition in a market where products are characterized by cross network externalities. Consumers differ in their valuation of these...”

“...In the present paper, we propose an extension of Spengler's (1950) analysis of successive oligopolies, to study the effects of entry in the downstream and...”

“...This paper develops a model of the daily newspaper industry in order to provide a tentative explanation for the rise of free newspapers. This explanation is...”

“...The press industry depends in a crucial way on the possibility of financing an important fraction of its activities by advertising receipts. We show that this...”

“...Perfect competition provides a model of a frictionless economy in which economic agents behave independently of each other, abandoning to the market the task...”