As a result of the Balassa effect relative prices change rapidly between and within the euro countries. Thus it is impossible to find a common monetary policy that will result in price stability in all countries. Based on empirical estimates of the Balassa model, the paper calculates a minimum...

We explain the recent events in the German market for online access using a model of a regulated monopoly renting phone lines to retailers. Retailers offer either a linear or a flat tariff to consumers. Consumer heterogeneity leads to adverse selectiion. We show why market entry for flatrate...

The view that high unemployment in West Germany and other European countries is caused by a path dependence effect - or hysteresis effect - is quite popular among economists. However, because of an identification problem, much of the empirical evidence for this hypothesis is not fu lly...

Decisions on the presence of seasonal unit roots in economic time series are commonly taken on the basis of statistical hypothesis tests. Some of these tests have absence of unit roots as the null hypothesis, while others use unit roots as their null. Following a suggestion by Hylleberg (1995)...

The paper deals with the effects of migration resulting from EU Eastern enlargement on the welfare states of Western Europe. Although migration is good in principle, as it yields gains from trade and specialization for all countries involved, it does so only if it meets with flexible labour...

While the financial protection measures enacted by the ECB and the community of Eurozone members have calmed financial markets, they have left the competitiveness problem of the Eurozone's southern countries and France unresolved. The paper compares price inflation before the crisis with the...