The empirical literature on mergers, market power and collusion in differentiated markets has mainly focused on methods relying on output and/or panel data. In contrast to this literature we suggest a novel approach that allows for the detection of collusive behaviour among a group of firms...

We highlight the importance of ‘centrality' for pricing. Firms characterized by a more central position in a spatial network are more powerful in terms of having a stronger impact on their competitors' prices and on equilibrium prices. These propositions are derived froma simple theoretical...

The term "competitiveness" has been used in conceptually distinct ways at the firm, regional and national levels. After primarily reviewing existing concepts at the national level, we introduce a new definition of regional competitiveness adapting definitions used in the academic literature....