The paper is devoted to the issue of twin-cities using this term in a narrow sense, with geographical proximity as an important criterion (as opposed to the broad sense of the twin-cities where the distance between cooperating cities doesn't matter). The paper is based on academic literature and...

We analyze the effect of the Öresund Bridge, a combined railway and motorway bridge between Swedish Malmö and the Danish capital Copenhagen, on inventive activity in the region of Malmö. Applying difference-in-difference estimation on individual-level data, our findings suggest that the...