This paper analyses the development of mobile telephony in France and Germany in 1998-2002. We conduct this analysis in relation to the antitrust investigation initiated by the French competition authority in 2002 due to exchange of strategic information and a share-fixing agreement between...

This article estimates the price elasticities of the demand for mobile telephone calls and the demand for messages for Portugal. We use a panel of individual level data. In order to account for the unobserved individual heterogeneity and for the data censoring, we estimate a Tobit model for...

Abstract This paper analyzes competition in a two-period differentiated-products duopoly in the presence of both switching costs and network effects. We show that they have opposite implications on the demand side, specially in the first period. Switching costs reduce demand elasticities and...

Abstract In this paper, we analyze how fixed-mobile (quadruple-play) bundling impacts the decision of consumers to churn telecommunications services. We use a database from an European operator of fixed and mobile telecommunications services which includes information about 9.6 million fixed...