Ayres, Ian, and Steven Levitt. Measuring Positive Externalities from Unobservable Victim Precaution: An Empirical Analysis of Lojack. Quarterly Journal of Economics, February 2008, 43-77.
Bahrke, Mike, and Bob Hoffman. Identifying the Fitness Needs of Law Enforcement Officers. Working Paper, Fit Force, 2007.
Coate, Stephen, and Glenn Loury. Will Affirmative-Action Policies Eliminate Negative Stereotypes? American Economic Review, 2003, 1220-40.
Donohue, John J, and Steven D. Levitt. The Impact of Race on Policing, Arrest Patterns, and Crime. Working Paper, Stanford University Law School, August 2009.