This article studies the determinants of systematic risk for a panel of European telecommunication incumbent operators. The systematic risk (the beta coefficient) is estimated with the capital asset pricing model using different econometric methods (OLS, ML GARCH and Kalman Filter). Previous...

We investigate cooperative investment in a new infrastructure and how it interacts with access obligations and demand uncertainty. Co-investment only increases total coverage if service differentiation and/or cost savings from joint investment, in particular due to high uncertainty, are high....

Purpose The main purpose of the present study was to improve and develop previously proposed models for Iran telecommunication networks. It should be noted that the six-dimensional (6D) sustainability model used in this study will be a useful and comprehensive model for industries. Since, the...

How does cost uncertainty affect the welfare consequences of an oligopoly? To answer this question, we investigate a Cournot oligopoly in which firms produce a homogeneous commodity and market entry is feasible. Marginal costs are unknown ex-ante, i.e. prior to entering the market. They become...

This paper proposes a theoretical framework for studying the invention of new products when demand is uncertain. In this framework, under general conditions, the threat of ex post entry by a competitor can deter invention ex ante. Asymmetric market power in the ex post market exacerbates the...