@article{MeierMeierVogler2007,
  author    = {Meier, Bernd and Meier, Sascha and Vogler, Andreas},
  title     = {Kein Anschluss unter dieser IP},
  year      = {2007},
  language  = {de}
}
@article{MeierMeierVogler2007,
  author    = {Meier, Bernd and Meier, Sascha and Vogler, Andreas},
  title     = {Wie Internettelefonie funktioniert},
  issn      = {1438-8987},
  year      = {2007},
  language  = {de}
}