In this paper, we study the dynamics of the market for DatabaseManagement Systems (DBMS), which is commonly assumed to possess networkeffects and where there is still some viable competition in our studyperiod, 2000 – 2004. Specifically, we make use of a unique anddetailed dataset on several...

There is a substantial number of cases where the a priori relationshipbetween products is not at all clear in the sense that although apparentto be clear substitutes may turn out to be in fact complements, orvice-versa. This paper aims to study the relationship between fixed andmobile telephony...