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...

Central features of today’s electronic communications markets are complementarities between the different layers of the value chain, substitutability between some applications, network effects in the provision of content and services, two-sided business models that partly involve indirect...

Market definition plays a critical role in EC competition law, as the first step of any investigation into the nature of competition in a given industry. While not an end in itself, definition of the relevant market serves to identify those products and areas which effectively restrain the...