@book{Link.1999,
  address = {Ettlingen},
  author = {Link, Jörg and Schleuning, Christian},
  interhash = {40b83a72c6953a59413f4f8ea7e8e53d},
  intrahash = {3d09d466f17ec67ff89913525109ef1a},
  isbn = {3930047373},
  price = {DM 88.00},
  publisher = {Fachverl. IM Marketing-Forum},
  title = {Das neue interaktive Direktmarketing:  Die neuen elektronischen Möglichkeiten der Kundenanalyse und Kundenbindung},
  year = 1999
}

@book{Chaffey.2001,
  address = {M\"unchen},
  author = {Chaffey, Dave},
  interhash = {49f6e69b7d31ae5a561a5e7bac2471e9},
  intrahash = {4a4c6c6f3075b12dcfd649ae9e2d25ab},
  isbn = {3827370094},
  publisher = {Pearson Studium},
  title = {Internet-Marketing},
  year = 2001
}

@book{Griese.1996,
  address = {Bern},
  author = {Griese, Joachim and Sieber, Pascal},
  interhash = {4f39c24851f5a38353e0187c8e50c742},
  intrahash = {332f64fdd3e61783be8bbcdf20ef6a55},
  isbn = {3258053421},
  publisher = {Haupt},
  title = {Internet:  Nutzung f\"ur Unternehmungen},
  year = 1996
}