[eng] The purpose of this paper is first an overview of the problems which emerge with the liberalization of telecommunications. Then, we focuse on the liberalization of infrastructures, and more precisely on the reciprocal access pricing problem. In a simple model, we show that cooperation...

Digital markets worldwide are in rapid flux. The Internet and World Wide Web have traditionally evolved in a largely deregulated environment, but recently governments have shown great interest in this rapidly developing sector and are imposing regulations for a variety of reasons that are...

This paper studies the links between non-renewable and intermittent renewable energy sources in the production of electricity. We argue that the relationship between the price of natural gas and investments in solar and wind capacity is represented by a bell-shaped curve, as opposed to being...

This article studies strategic aspects connected to third party access to storage facilities (TPAS) in the gas sector. We show that in some market settings, TPAS can be used strategically by vertically integrated gas producers who behave as buyers in the intermediate market. The aim of these...

This paper examines a model of competition between two types of health insurers: Managed Care Organizations (MCOs) and Conventional Insurers". MCOs vertically integrate health care providers and pay them at a competitive price, while conventional insurers work as indemnity plans and pay the...