@Article{DWZ04,
  author = 	 {J. Diederich and L. Wolf and M. Zitterbart},
  title =        "{A Mobile Differentiated Services QoS Model}",
  journal = 	 "Elsevier's Computer Communications",
  month =        jul,
  year = 	 2004,
  volume =	 27,
  number =	 11,
  pages =	 {1106--1114},
  note =         "Extended version of the ASWN'03 paper."
}