This paper reviews the recent developments in the economics of industry with respect to strategic entry deterrence. Starting from Bain's (1956) classical analysis, a simple two-stage game between an incumbent firm and a potential entrant is used to present the general structure of the entry...

Most theoretical models of spatial competition show a strong tendency toward spatial dispersion of firms, yet common observations suggest that firms tend to agglomerate. In this paper, the authors show that competition between Cournot-type oligopolists that discriminate over space leads to...

This note analyzes duopoly competition in a two stage (location-price) game, while allowing each f irm to establish a couple of outlets. Both the circle and the line mo del of spatial competition are considered. The main result is clear-c ut: in equilibrium neither firm will take up the...

Lars-Hendrik Röller, European School of Management and Technology, Berlin, diskutiert, wie sich die Regulierung im Telekommunikationssektor auf Investitionen in die IKT-Infrastruktur von etablierten und neuen Netzbetreibern auswirkt. Neue Forschungsergebnisse deuten darauf hin, dass die...