Do Universities Generate Agglomeration Spillovers? Evidence from Endowment Value Shocks

This research is quite a different model than we usually see, but it's of interest:

We find modest but statistically significant spillover effects of university activity. The estimates indicate that a 10% increase in higher education spending increases local non-education sector labor income by about 0.5%. As the implied elasticity is no larger than what previous work finds for agglomeration spillovers arising from local economic activity in general, university activity does not appear to make a place any more productive than other forms of economic activity. We do find, however, that the magnitude of the spillover is significantly larger for firms that are technologically closer to universities in terms of citing patents generated by universities in their own patents and sharing a labor market with higher education.