@book{Jaenkel1993,
  author    = {J{\"a}nkel, Ralph},
  title     = {Umweltrecht},
  series = {Studienmaterialien des Weiterbildenden Studiums Umweltschutz f{\"u}r Bildung und Hauswirtschaft},
  journal   = {Studienmaterialien des Weiterbildenden Studiums Umweltschutz f{\"u}r Bildung und Hauswirtschaft},
  publisher = {Univ; Techn. Univ},
  address   = {Potsdam; Magdeburg},
  isbn      = {3-929757-19-2},
  pages     = {69 S.},
  year      = {1993},
  language  = {de}
}
@article{Jaenkel1995,
  author    = {J{\"a}nkel, Ralph},
  title     = {Umweltschutz und Umweltrecht},
  year      = {1995},
  language  = {de}
}
@article{Jaenkel1994,
  author    = {J{\"a}nkel, Ralph},
  title     = {Oder},
  year      = {1994},
  language  = {de}
}
@article{Jaenkel1994,
  author    = {J{\"a}nkel, Ralph},
  title     = {Umweltschutz und Umweltrecht},
  year      = {1994},
  language  = {de}
}
@article{Jaenkel1994,
  author    = {J{\"a}nkel, Ralph},
  title     = {Einigungsvertrag},
  year      = {1994},
  language  = {de}
}