Given various recent antitrust investigations on the retail sector, we deal with uncovering demand systems substitution … patterns for a particular market (diapers) to investigate the inter-format competition (supermarkets vs. discounters vs …. drugstores). Using the uncovered demand system we compute retail and manufacturer margins and combine those with standard market …

This paper analyses the institutional framework for pharmacies in Germany and competition in that sector, which is … characterized by significant competition deficits. Based on our diagnosis and findings the advantages and disadvantages of two …

This paper analyzes how competition works in mobile telecommuncations markets and, bases on this analysis, we discuss … understanding competition in mobile telephony, is the fact that building a mobile telephone network requires highly specific …-ups will generally be inefficient. Instead, services with an inelastic demand should carry relatively high prices, while …

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that … they are disciplined by their smaller competitors' offerings. -- Wettbewerb ; Mobilfunk ; Telekommunikation ; kollektive …