In spite of Microsoft´s quasi monopoly position in the market for operating systems Linux has succeeded to become a serious competitor of Microsoft Windows. From an economic standpoint this fact raises some puzzles.(...)

In this paper, we compare two different representations of Framework Programs as affiliation network: "One-mode networks"' and "Two-mode networks"'. The aim of this article is to show that the choice of the representation has an impact on the analysis of the networks and on the results of the...