This paper offers some empirical evidence on how do product and process innovations affect manufacturing sales and exports. Accounting for differences in technological opportunities between industries, and the "market pull" or "technology push" nature of firms' innovations, we explain the share...

This paper is a survey of some recent theoretical models related to the endogeneous determination of market structure in differentiated products industries. Usually, market structure is explained mainly by supply side characteristics such as economies of scale, economies of scope and sunk costs....

This paper is an attempt to give a precise content to the notion of potential competition in a natural monopoly market. Competition is described as a two stage game in which a set of firms announce first a price, then a level of output. Contingent demands for each firm are obtained from a...

L'objet de cette étude est de présenter une analyse de la dynamique des prix industriels en relation avec l'évolution des coûts de production et les fluctuation de l'activité économique, dans quelques pays de l'OCDE au cours des vingt dernières années. Les succès récents que certains...

The paper examines under what conditions vertically differentiated duopolists engage in first-degree price discrimination. Each firm decides on a pricing regime at a first stage and sets prices at a second stage. The paper shows that when unit cost is an increasing and convex function of...

This paper investigates the choice of an intellectual protection regime for a process innovation. We set up a multi-stage model in which choosing between patent and trade secrecy is affected by three parameters : the patent strength defined as the probability that the right is upheld by the...