@article{Petsche2005,
  author    = {Petsche, Hans-Joachim},
  title     = {Einf{\"u}hrende Betrachtungen},
  isbn      = {3-89626-523-7},
  year      = {2005},
  language  = {de}
}
@article{Petsche2005,
  author    = {Petsche, Hans-Joachim},
  title     = {F{\"u}r Helmut John},
  year      = {2005},
  language  = {de}
}
@book{Petsche2005,
  author    = {Petsche, Hans-Joachim},
  title     = {N{\"u}chternschmerz im Irrenhaus : ortlose Texte am Rande der Philosophie},
  series = {Materialien und Dokumentationen},
  volume    = {3},
  journal   = {Materialien und Dokumentationen},
  editor    = {Claußen, Bernhard},
  publisher = {Studiengesellschaft f{\"u}r Sozialwissenschaften und Politische Bildung},
  address   = {Hamburg},
  isbn      = {3-00-016901-6},
  pages     = {262 S.},
  year      = {2005},
  language  = {de}
}
@article{Petsche2005,
  author    = {Petsche, Hans-Joachim},
  title     = {Das Internet als Medium : ein technikphilosophischer Ansatz},
  isbn      = {3-89626-225-4},
  year      = {2005},
  language  = {de}
}
@article{Petsche2005,
  author    = {Petsche, Hans-Joachim},
  title     = {Sustainable Development in the New L{\"a}nder},
  isbn      = {3-89404-935-9},
  year      = {2005},
  language  = {en}
}