Competition in the web search market
A study commissioned by Microsoft
More efficient and effective health care as a contribution to a sustainable financial policy in Germany Research project for the Federal Ministry of Finance
Status of the health care reform and proposals for the continuation of the reform
State innovation funding: When it comes to effectiveness, it’s worth taking a second look
DIW Weekly Report 22/2009, pp. 358-366
Economic stimulus programmes: Investments without sustainable growth effect
DIW Weekly Report 19/2009, pp. 314-320