ZUSAMMENFASSUNGDer Apothekenmarkt unterliegt in vielen europäischen Ländern nach wie vor einer starkenstaatlichen Regulierung. Sie besteht – je nach Land – in der Eigentümerregulierung, derRegulierung des Geschäftsbetriebes, der Öffnungszeiten, der Personalausstattung, derPreisbildung,...

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...