1. ‘Virtuele kinderpornografie in virtuele werelden: strafrechtelijk sanctioneren?’ (‘Virtual child pornography in virtual worlds: should it be sanctioned criminally?’);Brasem;Tijdschrift Voor Internetrecht,2008
2. Rapport Computercriminaliteit in Nederland (Report computer crime in the Netherlands);Charbon en;Platform Computercriminaliteit,1990
3. Assuring a trusted and resilient information and communications infrastructure;Cyberspace Policy Review,2009
4. Was ist Soziologie?;Elias,1970