TY - CHAP A1 - Maaser, Michael A1 - Ortmann, Steffen A1 - Langendörfer, Peter T1 - The Privacy Advocate: Assertion of Privacy by Personalised Contracts Y1 - 2011 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/5793 ER -