References
- Cloninger , D. O. 1992 . Capital punishment and deterrence: a portfolio approach . Applied Economics , 24 : 635 – 645 .
- Lester , D. 1987 . The Death Penalty , Springfield, Illinois, , USA : Charles Thomas .
- Selling , T. and Wolfgang , M. E . 1971 . “ Weighting crime ” . In Crime and Justice, Volume 1, The Criminal in Society , Edited by: Radzinowicz , L. and Wolfgang , M. E. 167 – 176 . New York, , USA : Basic .