@book{Benkner1996,
  author    = {Benkner, Thorsten},
  title     = {Kapazit{\"a}tssteigernde Maßnahmen f{\"u}r digitale Mobilfunksysteme der dritten Generation},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {3-8265-1682-6},
  pages     = {VII, 170 S. : graph. Darst.},
  year      = {1996},
  language  = {de}
}
@book{BenknerStepping2002,
  author    = {Benkner, Thorsten and Stepping, Christoph},
  title     = {UMTS - Universal Mobile Telecommunications System},
  publisher = {Schlembach},
  address   = {Weil der Stadt},
  isbn      = {3-935340-07-9},
  pages     = {XVI, 511 S. : graph. Darst.},
  year      = {2002},
  language  = {en}
}