Concurrence par les prix et variété de produits

Paul Champsaur and Jean Rochet

Annals of Economics and Statistics, 1986, issue 1, 155-173

Abstract: The literature provides two polar explanations for the variety of products of quantities offered on the market. Either this variety results from the number of firms, each of which supplies a single product or quality. Or else there is a monopoly offering a variety of products, that is, choosing its catalogue of goods in order better to exploit the diversity of its clientele. This article is a contribution to the development of an intermediary approach permitting an analysis of oligopoly situation without any a priori restriction on the variety of products by the individual firm.

Date: 1986
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