Im Zuge der von der Bundesregierung eingeleiteten Energiewende wird zunehmend die Frage diskutiert, wie bei einem forcierten Ausbau der erneuerbaren Energien und der dadurch zunehmenden Fluktuation der Stromerzeugung die Versorgungssicherheit gewährleistet werden kann. Zur Diskussion steht die...

Die Preise für wissenschaftliche, technische und medizinische (WTM) Fachzeitschriften sind in den letzten 20 Jahren dramatisch gestiegen. Die unterschiedlichen Preisentwicklungen zwischen kommerziellen und nichtkommerziellen Verlagen ist dabei nicht durch unterschiedliche Kostenentwicklungen zu...

We use a novel data set with exact price quotes from virtually all German gasoline stations to empirically investigate how a temporary variance in local market structure - induced by restricted opening hours of specific players - affects price competition. We focus on stations selling gasoline...

This paper summarizes the peculiarities of online markets and discusses recent antitrust cases related to online markets. Following a brief description of the online markets' characteristics and potential tendencies for concentration the paper first discusses the antitrust allegations and...

This papers analyses how horizontal mergers affect innovation activities of the merged entity and its non-merging competitors. We develop an oligopoly model with heterogeneous firms to derive empirically testable implications. Our model predicts that a merger is more likely to be profitable in...

This paper offers a new and broad insight into the landscape of German cartels, utilizing a unique dataset of all illegal horizontal cartels detected by the German Federal Cartel Office (FCO) between 1958 and 2004 and all legal cartels authorized during the same time period. We also provide the...

This paper explores the effects that collusion can have in newspaper markets where firms compete for advertising as well as for readership. We compare three modes of competition: i) competition in the advertising and the reader market, ii) semi-collusion over advertising (with competition in the...

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...