Enabling Factors for IN Service Provider Access. - Audun Jøsang; M. G. L. Bijnagte; Geert Kleinhuis (SMARTNET, 1999)

Access Control Based on Attribute Certificates. - Geert Kleinhuis; Boaz Gelbord; Hiddo Hut; Erik Kwast (ICWI, 2002)

Security Attributes Based Digital Rights Management. - Cheun Ngen Chong; René van Buuren; Pieter H. Hartel; Geert Kleinhuis (IDMS/PROMS, 2002)

On the Use of PKI in a Residential Gateway Environment. - Boaz Gelbord; Geert Kleinhuis (ICWI, 2003)

Using a privilege management infrastructure for secure web-based e-health applications. - Bernd Blobel; Petra Hoepner; Robert Joop; Stamatis Karnouskos; Geert Kleinhuis; George I. Stassinopoulos (Comput. Commun., 2003)

Service Brokerage in Prolog. - Cheun Ngen Chong; Sandro Etalle; Pieter H. Hartel; Rieks Joosten; Geert Kleinhuis (ICEIS (3), 2005)

Two Worlds, One Smart Card: An Integrated Solution for Physical Access and Logical Security Using PKI on a Single Smart Card. - Jaap-Henk Hoepman; Geert Kleinhuis (EuroPKI, 2007)

Security analysis of the Dependability, Security Reconfigurability framework. - Tim Hartog; Geert Kleinhuis (CRiSIS, 2008)