@misc{Schmitt1994,
  author    = {Schmitt, Hanno},
  title     = {Alternativschulen ; Antiautorit{\"a}re Erziehung ; Antip{\"a}dagogik ; Schulversuche},
  year      = {1994},
  language  = {de}
}
@misc{Schmitt1998,
  author    = {Schmitt, Hanno},
  title     = {Art. Salzmann, Christian Gotthilf},
  isbn      = {3-598-23168-7},
  year      = {1998},
  language  = {de}
}