This paper explores the impact of industrial clusters on regional growth at level of German labour market regions within a regional convergence model. It focuses on vertically connected industrial sectors, which can emerge parallel to horizontal interconnections. Based on works of Schnabl (2000)...

We investigate how variety affects the innovation output of a region. Borrowing arguments from theories of recombinant innovation, we expect that related variety will enhance innovation as related technologies are more easily recombined into a new technology. However, we also expect that...