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...