@article{Barth2004,
  author    = {Barth, Stephan},
  title     = {Problemversch{\"a}rfung bei der Klientel der Bew{\"a}hrungshilfe. Ergebnisse von Stichtagserhebungen im Landgerichtsbezirk Siegen},
  series = {Bew{\"a}hrungshilfe},
  journal   = {Bew{\"a}hrungshilfe},
  number    = {4},
  pages     = {382 -- 388},
  year      = {2004},
  language  = {de}
}
@article{Wickel2004,
  author    = {Wickel, Hans Hermann},
  title     = {Mauern einreißen},
  series = {Praxis Spiel + Gruppe},
  volume    = {17},
  journal   = {Praxis Spiel + Gruppe},
  number    = {3},
  pages     = {113 -- 118},
  year      = {2004},
  language  = {mul}
}
@article{Wickel2004,
  author    = {Wickel, Hans Hermann},
  title     = {Der Fit-Mach-Theater-Song},
  series = {Grundschule Musik},
  volume    = {29},
  journal   = {Grundschule Musik},
  pages     = {5},
  year      = {2004},
  language  = {de}
}
@article{Wickel2004,
  author    = {Wickel, Hans Hermann},
  title     = {Ach, bittrer Winter},
  series = {Grundschule Musik},
  volume    = {32},
  journal   = {Grundschule Musik},
  pages     = {30 -- 34},
  year      = {2004},
  language  = {mul}
}