Based on a sample of German inno innovating vating firms that contains information on formal and informal innovation cooperation between customers and suppliers, we state that firms perceive informal cooperation as being more important than formal cooperation modes. We then investigate the...

The prevailing theories of entrepreneurship have typically revolved around the ability of individuals to recognize opportunities and act on them by starting new ventures. This has generated a literature asking why entrepreneurial behavior varies across individuals with different characteristics,...

1 Introduction and Motivation -- 2 Why and How Does Economic Activity Grow? An Overview of the Literature -- 3 Why and How Does Economic Activity Concentrate in Space? Another Overview of the Literature -- 4 Spatial Knowledge Spillovers and the Dynamics of Agglomeration and Regional Growth -- 5...