1Jacqueline E. Ross, The Place of Covert Surveillance in Domocratic Societies: A Comparative Study of the United States and Germany,ww.law.uiuc.edu/faculty/documents/vitae/jross.pdf, last visited on January 12, 2007.
2Gary T. Marx, The Interweaving Of Public And Private Police Undercover gtmarx/www/garyhome.html, 12, 2007. Work, http://web.mit.edu/ last visited on January
3Gary T. Marx, Recent Developments In Undercover Policing.