Erenay, N, V Dittmmann, and M Graf. “Paedophilia on the Internet - a Study of 33 Convicted Offenders in the Canton of Lucerne”. Swiss Medical Weekly 135, no. 3334 (August 27, 2005): 488–494. Accessed March 28, 2024. https://smw.ch/index.php/smw/article/view/524.