Manel Medina, Andreas Mitrakas, Kai Rannenberg, Erich Schweighofer, Nikolaos Tsouroulas: Privacy Technologies and Policy - 6th Annual Privacy Forum, APF 2018, Barcelona, Spain, June 13-14, 2018, Revised Selected Papers. Lecture Notes in Computer Science 11079, Springer 2018, ISBN 978-3-030-02546-5