@misc{Quaisser1996,
  author    = {Quaisser, Erhard},
  title     = {Rosenfeld, M., Geombinatorics, 5 (1996), 4, S. 156 - 159},
  year      = {1996},
  language  = {de}
}
@misc{Quaisser1996,
  author    = {Quaisser, Erhard},
  title     = {Siciliano, A., J. Geom., 55 (1996), S. 162 - 167},
  year      = {1996},
  language  = {de}
}
@misc{Klotzek1996,
  author    = {Klotzek, Benno},
  title     = {Kroll, H. J., Eine Kennzeichnung der miquelschen Minkowski-Ebenen durch Transitivit{\"a}tseigenschaften},
  year      = {1996},
  language  = {de}
}
@misc{Klotzek1996,
  author    = {Klotzek, Benno},
  title     = {R{\"o}schel, O., Drehfl{\"a}chen zweiter Ordnung durch einen Kegelschnitt},
  year      = {1996},
  language  = {de}
}
@misc{Quaisser1993,
  author    = {Quaisser, Erhard},
  title     = {Bonetti, F., Civolani, N., Centro Stampa Univ. degli Studi di Perugia, (1993), S. 113 - 131},
  year      = {1993},
  language  = {it}
}
@misc{Quaisser1993,
  author    = {Quaisser, Erhard},
  title     = {Steinke, G. F., Geometriae Dedicata, 48 (1993), S. 337 - 348},
  year      = {1993},
  language  = {de}
}
@misc{Quaisser1993,
  author    = {Quaisser, Erhard},
  title     = {Strambach, K., Centro Stampa Univ. degli Studi di Perugia, (1993), S. 21 - 24},
  year      = {1993},
  language  = {it}
}
@misc{Quaisser1993,
  author    = {Quaisser, Erhard},
  title     = {Kainen, P. C., Geombinatorics, 3 (1993), 1, S. 10 - 12},
  year      = {1993},
  language  = {de}
}
@misc{Klotzek1995,
  author    = {Klotzek, Benno},
  title     = {Makarov, V. S., On the fundamental polyhedron of a diskrete group of motions of a Lobachevskii space, its combinatorics and deformation},
  year      = {1995},
  language  = {en}
}
@misc{Klotzek1995,
  author    = {Klotzek, Benno},
  title     = {Ruegg, A. ; Burmeister, G., M{\´e}thodes constructives de la g{\´e}om{\´e}trie spatiale},
  year      = {1995},
  language  = {fr}
}