@book{Dienst1975,
  author    = {Dienst, Karl-Jakob},
  title     = {Zu Sekanten symmetrische Halbovoide / Karl Jakob Dienst},
  publisher = {Techn. Hochsch., Fachbereich Mathematik},
  address   = {Darmstadt},
  pages     = {10 S.},
  year      = {1975},
  language  = {de}
}
@book{Dienst1975,
  author    = {Dienst, Karl-Jakob},
  title     = {Schnitt- und Zykelgeometrien / Karl Jakob Dienst},
  publisher = {Techn. Hochsch., Fachbereich Mathematik},
  address   = {Darmstadt},
  pages     = {39 S.},
  year      = {1975},
  language  = {de}
}
@book{Dienst1976,
  author    = {Dienst, Karl-Jakob},
  title     = {Minkowski-Ebenen mit Spiegelungen / Karl Jakob Dienst},
  publisher = {Techn. Hochsch., Fachbereich Mathematik},
  address   = {Darmstadt},
  pages     = {11 S.},
  year      = {1976},
  language  = {de}
}
@article{Dienst1977,
  author    = {Dienst, Karl-Jakob},
  title     = {Schnitt- und Zykelgeometrien},
  series = {Geometriae Dedicata (1977)},
  journal   = {Geometriae Dedicata (1977)},
  pages     = {23 -- 54},
  year      = {1977},
  language  = {de}
}