@conference{pollak2004mobilesummit, author = "Christoph Pollak and Seoug Hoon Oh and Arnoldo Giralda and Vaggelis Nikas and Lioudakis, Georgios V. and Jose Manuel Sanchez", booktitle = "Proceedings of the 13th IST Mobile {\&} Wireless Communications Summit 2004", note = "Lyon, France, 27-30 June, 2004", title = "{A} {SIP} based concept for {NAS} signaling in combination with an all-{IP} core network architecture", year = "2004", }