We present a methodology allowing to introduce manufacturers and retailers vertical contracting in their pricing strategies on a differentiated product market. We consider in particular two types of non linear pricing relationships, one where resale price maintenance is used with two part...

The purpose on this paper is twofold. First, we present an alternative model of agglomeration and trade that displays the main features of the recent economic geography literature while allowing for the derivation of analytical results by means of simple algebra. Second, we show how this...

In this paper, we examine how strategic interactions affect airline network. We develop a three stage duopoly game: at stage 1 airlines determines their network structure (linear versus hub-and-spoke). At stage 2 they decide on their capacities, and at stage 3 firms compete in quantities. The...

In this paper, we provide a very simple model to shed light on the issue of managed competition in mixed quasi-markets (i.e. regulated markets in which social and for-profit firms coexist). In doing this, we consider the literature on mixed oligopolies as a reasonable reference point and try to...

In this paper, a spatial (circular) model is used to endogenously determine product locations and prices when consumers have an elastic (linear) demand with a finite reservation price. I show that a symmetric two-stage Bertrand-Nash equilibrium requires maximal product differentiation....

The main section of the paper analyzes the principles and practice of competition policy for utilities under six headings: price discrimination and cross-subsidy; oligopolistic behaviour; mergers and takeovers; vertical structure; network access pricing; and historical entry barriers. The...

The aim of this paper is to study the impact of breaking up national gas sales consortia in Western Europe. We show, within a numerical model of the Western European natural gas market- that once the demand side of the market is liberalized, each producing country has an incentive to break up...