@TechReport{iza:izadps:dp2184,
            	author={Heckman, James J.},
            	title={Contributions of Zvi Griliches},
            	year={2006},
	month={Jun},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={2184},
            	url={https://www.iza.org/publications/dp2184},
	abstract={In this article, I summarize Griliches’ contributions to economics and to applied econometrics.},
	keywords={growth;productivity improvement;social rate of return},
            }