Maintenance: From Wednesday, May 30, 2018 6:00 p.m. to Thursday, May 31, 2018 morning, maintenance work on the ZORA servers is scheduled. ZORA will not be available during this period. Thank you for your patience.
Lutz, D J; Lamp, D; Mandic, P; Hecht, F; Stiller, B (2010). Charging of SAML-based federated VoIP services. In: 5th International Conference for Internet Technology and Secured Transactions (ICITST-2010), London, U.K., 8 November 2010 - 11 November 2010, 1-8.