This paper analyses the interdependency between the market for music recordings and concert tickets, assuming that there are positive indirect network effects both from the record market to ticket sales for live performances and vice versa. Using a model with two interrelated Salop circles we...

This paper analyses the interdependency between the market for music recordings and concert tickets, assuming that there are positive indirect network effects both from the record market to ticket sales for live performances and vice versa. Using a model with two interrelated Salop circles we...

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and...

This paper estimates demand elasticities for the Turkish mobile telecommunication market. In contrast to most other studies, firm level data is used to estimate dynamic panel data models including instrumental variable techniques. Both short- and long-run elasticities are calculated, yielding a...

This paper analyses the interdependency between the market for music recordings and concert tickets, assuming that there are positive indirect network effects both from the record market to ticket sales for live performances and vice versa. In a model with two interrelated Hotelling lines prices...

Price levels and movements on gasoline and diesel markets are heavily debated among consumers, policy-makers, and competition authorities alike. In this paper, we empirically investigate how and why price levels differ across gasoline stations in Germany, using eight months of data from a novel...

Am 26. Februar 2007 hat die EU-Kommission ein beschleunigtes Vertragsverletzungsverfahren gegen Deutschland wegen der Einführung von angeblichen "Regulierungsferien" in dem jüngst novellierten Telekommunikationsgesetz (TKG) eröffnet. Die Kommission vermutet, dass die dort getroffene...

Im Dezember 2013 wurde die Markttransparenzstelle für Kraftstoffe in Betrieb genommen. Jetzt stellt sich die Frage, ob die Einführung tatsächlich zu einer Intensivierung des Wettbewerbs auf dem Tankstellenmarkt beigetragen hat. Die hier vorgestellte Analyse beruht erstmals auf umfassenden...

This paper examines how different unionisation structures affect firms' innovation incentives and industry employment. We distinguish three modes of unionisation with increasing degree of centralisation: (1) 'Decentralisation' where wages are determined independently at the firm-level, (2)...

This paper examines mobile termination fees and their regulation when networks are asymmetric in size. It is demonstrated that with consumer ignorance about the exact termination rates (a) a mobile network's termination rate is the higher the smaller the network's size (as measured through its...