Privacy Contracts as an Extension of Privacy Policies. - Hendrik J. G. Oberholzer; Martin S. Olivier (ICDE Workshops, 2005)

Privacy contracts incorporated in a privacy protection framework. - Hendrik J. G. Oberholzer; Martin S. Olivier (Comput. Syst. Sci. Eng., 2006)

Emergency Privacy Measures. - Hendrik J. G. Oberholzer; Martin S. Olivier (CSE (3), 2009)

A PET Evaluation Framework for Relational Databases. - Hendrik J. G. Oberholzer; Sunday Olusegun Ojo; Oludayo O. Olugbara (SocialCom, 2013)