We examine the bipartite graphs of German corporate boards in 1993, 1999 and 2005, and identify cores of directors who are highly central in the entire network while being densely connected among themselves. Germany's corporate governance has experienced significant changes during this time, and...

This paper explores the impact of R&D subsidies on the concentration of R&D in an economy. First, governments are often criticized of subsidizing predominantly larger firms and thus contribute to persistence of leadership in markets and higher barriers to entry, and, hence, reduced competition...

The literature on ownership structures made continual use of notions such as cross-holdings and pyramids which are closely related to the vastly increasing network literature. We propose to transfer successfully applied network methods to the corporate control and corporate governance branch as...

The paper briefly sketches alternative models of dealing with principal-agent problems and compares major characteristics of bank-oriented versus marketoriented systems of corporate governance. The ownership structure in Germany is contrasted with evidence for other industrial countries. This...