Kirsten Wahlstrom Gerald Quirchmayr The motivation and proposition of a privacy-enhancing architecture for operational databases. 173-182 2007 ACSW Frontiers http://crpit.com/abstracts/CRPITV68Wahlstrom.html conf/acsw/2007 db/conf/acsw/acsw2007.html#WahlstromQ07