@TechReport{iza:izadps:dp9593,
            	author={Hamermesh, Daniel S.},
            	title={Citations in Economics: Measurement, Uses and Impacts},
            	year={2015},
	month={Dec},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={9593},
            	url={https://www.iza.org/publications/dp9593},
	abstract={I describe and compare sources of data on citations in economics and the statistics that can be constructed from them. Constructing data sets of the post-publication citation histories of articles published in the "Top 5" journals in the 1970s and the 2000s, I examine distributions and life cycles of citations, compare citation histories of articles in different sub-specialties in economics and present evidence on the history and heterogeneity of those journals' impacts and the marginal citation productivity of additional coauthors.
I use a new data set of the lifetime citation histories of over 1000 economists from 30 universities to rank economics departments by various measures and to demonstrate the importance of intra- and interdepartmental heterogeneity in productivity. Throughout, the discussion summarizes earlier work. I survey research on the impacts of citations on salaries and non-monetary rewards and discuss how citations reflect judgments about research quality in economics.},
	keywords={academic productivity;tournaments;publication;rankings},
            }