In this paper we develop a model of hub competition, which includes duopolistic Bertrand competition on the downstream market in order to analyze the incentives of hub airports to exploit market power in the transfer passenger market. We find evidence that downstream competition limits hub...

This paper quantifies the technical efficiency of German bus companies and elaborates on the main factors influencing their performance. Efficiency is measured with a stochastic production frontier. We test for the impact on efficiency of ownership structure and participation at tendering....

With the increasing profit orientation of German airport operators the question as to weather they possess market power is gaining more importance. Whereas there have been some studies about the degree of market power of individual airports in countries as Australia and Great Britain, the German...