1. Almer, C., & Goeschl, T. (2010). Environmental crime and punishment: Empirical evidence from the German penal code. Land Economics, 86(4), 707–726.
2. Apel, R. (2013). Sanctions, perceptions, and crime: Implications for criminal deterrence. Journal of Quantitative Criminology, 29(1), 67–101.
3. Assunção, J., Gandour, C., & Rocha, R. (2013). DETERring deforestation in the Brazilian Amazon: Environmental monitoring and law enforcement. Climate policy initiative. Accessed August 25, 2017 at
https://climatepolicyinitiative.org/wp-content/uploads/2013/05/DETERring-Deforestation-in-the-Brazilian-Amazon-Environmental-Monitoring-and-Law-Enforcement-Technical-Paper.pdf
4. Baron, R., & Kenny, D. (1986). The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. Journal of Personality and Social Psychology, 51, 1173–1182.
5. Beccaria, C. (1963). On crimes and punishments. Translated with an introduction by Henry Paolucci. New York: Macmillian.