Science as an economic factor in Bremen
The economic significance of universities and non-university research institutions
Student and cost structure of higher education teaching
in Bremen
Annual Report on European SMEs 2013/2014 – A partial and fragile recovery
The economic significance of the wind energy sector
Study commissioned by the German Wind Energy Association (BWE e.V.) on the economic significance of the wind energy sector for Germany in 2012
For a market-based response to the annexation of Crimea
DIW Weekly Report 16/17 / 2014, p. 416