- BRAMMERTZ S., “Cross-border operational activities” in DE RUYVER B., VERMEULEN G., VANDER BEKEN T., Combating Transnational Organised Crime, Antwerp, Maklu, 2002, pp.
- BRAMMERTZ S., “Cross-border operational activities” in DE RUYVER B., VERMEULEN G., VANDER BEKEN T., Combating Transnational Organised Crime, Antwerp, Maklu, 2002, pp. 133-155.