Nagin, D.S. (1998). Criminal deterrence research at the outset of the twenty-first century. Crime and Justice, 23, 1-42.
Packer, H.L. (1968). The Limits of the Criminal Sanction. Stanford, CA: Stanford University Press.
Pogarsky, G. (2009). Deterrence and decision-making: Research questions and theoretical refinements. In M.D. Krohn, A. Lizotte and H.G. Penlly (Eds.), Handbook on Crime and Deviance (pp. 241-258). New York: Springer.
Texas Department of Criminal Justice. (2011). Executed Offenders. Available: http://www.tdcj.state.tx.us/death_row/dr_executed_offenders.html.
Wadsworth, T.I.M., and Roberts, J.M. (2008). When missing data are not missing: A new approach to evaluating supplemental homicide report imputation strategies. Criminology, 46(4), 841-870.
Zimring, F.E. (2010). The scale of imprisonment in the United States: Twentieth century patterns and twenty-first century prospects. Journal of Criminal Law and Criminology, 100(3), 1,225-1,246.
Zimring, F.E., and Fagan, J. (2000). The search for causes in an era of crime declines: Some lessons from the study of New York City homicide. Crime & Delinquency, 46(4), 446-456.