@TechReport{iza:izadps:dp12631,
            	author={Nathan, Max},
            	title={Does Light Touch Cluster Policy Work? Evaluating the Tech City Programme},
            	year={2019},
	month={Sep},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={12631},
            	url={https://www.iza.org/index.php/publications/dp12631},
	abstract={Despite academic scepticism, cluster policies remain popular with policymakers. This paper evaluates the causal impact of a flagship UK technology cluster programme. I build a simple framework and identify effects using difference-in-differences and synthetic controls on rich microdata. I further test for timing, cross-space variation, scaling and churn channels. The policy grew and densified the cluster, but has had more mixed effects on tech firm productivity. I also find most policy 'effects' began before rollout, raising questions about the programme's added value.},
	keywords={economic development;technology;clusters;cities;synthetic controls},
            }