This paper analyses market competition between two different types of credit card platforms: not-for-profit associations and proprietary systems. The main focus is on the role of the interchange fee set by not-for-profit platforms. We show that when the interchange fee is set so as to maximise...

There are many examples of markets involving two groups of agents who need to interact via 'platforms', and where one group's benefit from joining a platform depends on the number of agents from the other group who join the same platform. This paper presents theoretical models for three variants...

This paper presents new evidence on the dynamics of dollarization and euroization for twenty-five transition countries. Estimates of the amount of foreign currency in circulation (FCC) in transition countries are used to develop a new comprehensive dollarization index (CDI) and separate indices...

This paper presents a model where agents decide on the timing of replacement of ageing machines. The optimal replacement policy for an agent is influenced by other agents' decisions because the productivity of a particular vintage displays network externalities that set in with a lag. In...

This paper presents new evidence on the dynamics of dollarization and euroization for twenty-five transition countries. Estimates of the amount of foreign currency in circulation (FCC) in transition countries are used to develop a new comprehensive dollarization index (CDI) and separate indices...

This paper analyses dynamic pricing in markets with network externalities. Network externalities imply demand inertia, because the size of a network increases the usefulness of the product for consumers. Since past sales increase current demand, firms have an incentive to set low introductory...

We examine the extent, causes and consequences of the use of foreign currency as a co-circulating medium of exchange and store of value in Latin America. Using new estimates of the amount of foreign currency in circulation in the form of US dollars, we obtain unique measures of currency...

This paper employs new estimates of US currency held abroad to determine the degree of unofficial or de facto dollarization that has taken place in key countries around the world. Empirical estimates of foreign currency in circulation permits refined definitions of unofficial dollarization...

This paper analyses the impact of public policies supporting open source software (OSS). Users can be divided between those who know about the existence of OSS, the "informed" adopters, and the "uninformed" ones; the presence of uniformed users yields to market failures that justify government...