Die Frage nach der richtigen Ausgestaltung marktwirtschaftlichen Wettbewerbsist eine, die Politiker, Wirtschaftswissenschaftler und nicht zuletzt Unternehmerund ihre Interessenverbände seit langer Zeit bewegt. Trotz der langen und intensiven Diskussionen ist es dennoch bis dato nicht gelungen,...

Network-effects may lead to imperfect competition and may therefore make a Strategie trade policy attractive for a country exporting network goods. I analyze the implications of Strategie trade policy in a model of horizontal produetdifferentiation with network effects. Within this framework,...

Computer-owners combine complementary goods to a computer-system. They exchange data with others and between different applications. These interdependencies lead to three different network effects, which are explained in the framework of Hotelling models. In the framework of a one-dimensional...

Standard international trade lectures normally comprises three central theories: the Ricardian Model, the Heckscher-Ohlin-Samuelson Modell and New Trade Theory à la Krugman 1979 and 1980. Nowadays this trilogy needs to be enhanced with the basic concepts of a new class of trade models: the New...