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Ludwig, Jens. Better Gun Enforcement, Less Crime. Criminology & Public Policy, Volume 4, Issue 4, November 2005

Webster, D.W.; Bulzacchelli, M.T.; Zeoli, A.M.; and Vernick, J.S. Effects of Undercover Police Stings of Gun Dealers on the Supply of New Guns to Criminals. Injury Prevention, Volume 12, August 2006. Pages 225-30.

Papachristos, Andrew V., Meares, Tracey L. and Fagan, Jeffrey, "Attention Felons: Evaluating Project Safe Neighborhoods in Chicago" (November 2005). U Chicago Law & Economics, Olin Working Paper No. 269 Available at SSRN

Braga, Anthony A. and Glenn L. Pierce. "Disrupting Illegal Firearms Markets in Boston: The Effects of Operation Ceasefire on the Supply of New Handguns to Criminals." Criminology & Public Policy 4, no. 4 (November 2005).

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