@conference{lioudakis2005mobilesummit, author = "Lioudakis, Georgios V. and Vaggelis Nikas and Christoph Pollak and Richard Wisenocker and Dellas, Nikos", booktitle = "Proceedings of the 14th IST Mobile {\&} Wireless Communications Summit", note = "Dresden, Germany, June 19 – 23, 2005", title = "{SIP} as a {U}nified {S}ignalling {S}olution in a {B}eyond 3{G} {S}ystem", year = "2005", }