Most of my work is governed by non-disclosure agreements. But a number of results has been disclosed to the public and can be used to get an impression of my work.

Publicly available project results

• „Planungsauftrag eRezept, eArztbrief, ePatientenakte und Telematikinfrastruktur“, with ORGA Kartensysteme GmbH and IBM Deutschland GmbH, March 2004 on behalf of the head organisations of the German health insurance system

• Specifications in the context of introducing the German electronic health card in the projects bIT4Health, Solution Outline and T-Stich (available on websites of Federal Ministry of Health or DIMDI)

• „A Primer on the Public Key Directory“ with M. Hartmann and O. Käthler,
  an introduction to the ICAO PKD on behalf of the ICBWG and the ICAO PKD Board
  (on the ICAO web site: www.icao.int/mrtd)

• „Security Issues in Cross-border Electronic Authentication“ with D. Hartmann for the European Network and Information Security Agency ENISA, 2010 (on the ENISA web site: www.enisa.europa.eu)

• „Mapping security services to authentication levels“ with S. Górniak, D. Ombelli, R. Tirtea and D. Ikonomou for the European Network and Information Security Agency ENISA, 2010 (on the ENISA web site: www.enisa.europa.eu)

Articles

• „The ICAO PKD – 10 good reasons to join“ with M. Hartmann,
  Keesing Journal of Documents & Identity, Issue 30, 2009

Books

• Amiga Fun & Games – Spieleprogrammierung in AmigaBASIC, 1988

• Amiga Basic Know-How – AmigaBASIC Programmierpraxis, mit Klaus Bonau, 1989

• Spiele und Spieleprogrammierung in Turbo Pascal, 1991

• Borland Pascal für Profis – Fortgeschrittene Programmiertechniken für DOS, DPMI und Windows, 1994