Personal Wireless Communications IFIP TC6 9th International Conference, PWC 2004, Delft, The Netherlands, September 21-23, 2004, Proceedings - Niemeegers, Ignas; Niemeegers, Ignas; Heemstra de Groot, Sonia; Heemstra de Groot, Sonia (Springer Berlin Heidelberg : Imprint: Springer, 2004)