1. Archibold, R.C. (2007) An end to the free ride on trains in Los Angeles. New York Times, http://www.nytimes.com/2007/12/03/us/03transit.html , accessed 28 August 2008.
2. Audit Office of New South Wales. (2006) Fare Evasion on Public Transport: Follow-up of 2000 Performance Audit. Sydney, NSW: Auditor-General.
3. Beyleveld, D.A. (1980) A Bibliography on General Deterrence Research. Westmead, UK: Saxon House.
4. Bijleveld, C. (2007) Fare dodging and the strong arm of the law: An experimental evaluation of two different penalty schemes for fare evasion. Journal of Experimental Criminology 3(2): 183–199.
5. Clarke, R.V. (1993) Fare evasion and automatic ticket collection on the London Underground. In: R.V. Clarke (ed.) Crime Prevention Studies, Vol. 1. Monsey: NY: Criminal Justice Press, pp. 135–146.