1. Frei A, Erenay N, Dittmann V, Graf M: Paedophilia on the Internet – a study of 33 convicted offenders in the Canton of Lucerne. Swiss Medical Weekly. 2005, 135 (33–34): 488-494.
2. Quayle E, Erooga M, Wright L, Taylor M, Harbinson D: Abuse Images and the Internet. Only Pictures? Therapeutic work with Internet sex offenders. Edited by: Quayle E, Erooga M, Wright L, Taylor M, Harbinson D. 2006, Lyme Regis: Russell House Publishing Ltd, 1-11.
3. Taylor M, Quayle E, Holland G: Child Pornography, the Internet and offending. The Canadian Journal of Policy Research. 2001, 2: 94-100.
4. Burke A, Sowerbutts S, Blundell B, Sherry M: Child Pornography and the Internet: Policing and Treatment Issues. Psychiatry, Psychology and Law. 2002, 9 (1): 79-84.
5. Kuhnen K: Kinderpornographie und Internet; Child pornography in the Internet. 2007, Goettingen: Hogrefe