@misc{Klotzek1994,
  author    = {Klotzek, Benno},
  title     = {Falkner, N., A characterization of inner product spaces},
  year      = {1994},
  language  = {en}
}
@misc{Quaisser1994,
  author    = {Quaisser, Erhard},
  title     = {Kuperberg, W., Discrete and Computational Geometry, 12 (1994), S. 83 - 90},
  year      = {1994},
  language  = {en}
}
@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{Quaisser1995,
  author    = {Quaisser, Erhard},
  title     = {Gr{\"u}nbaum, B., Geombinatorics, 4 (1995), 3, S. 77 - 79},
  year      = {1995},
  language  = {en}
}
@misc{Quaisser1995,
  author    = {Quaisser, Erhard},
  title     = {Coxeter, A. S. M., Linear algebra and its applications, 226-228 (1995), S. 375 - 388},
  year      = {1995},
  language  = {en}
}
@misc{Quaisser1995,
  author    = {Quaisser, Erhard},
  title     = {Quan, L., Journal of mathematical imaging and vision, 5 (1995), S. 263 - 267},
  year      = {1995},
  language  = {en}
}
@misc{Quaisser1995,
  author    = {Quaisser, Erhard},
  title     = {Jeurissen, R. H., Linear algebra appl., 226/228 (1995), S. 617 - 638},
  year      = {1995},
  language  = {en}
}
@misc{Quaisser1995,
  author    = {Quaisser, Erhard},
  title     = {Payne, S.R., Linear algebra appl., 226/228 (1995), S. 115 - 137},
  year      = {1995},
  language  = {en}
}
@misc{Quaisser1996,
  author    = {Quaisser, Erhard},
  title     = {Greewell, D. ; Johnson, P. D., Geombinatorics,2 (1993), 3, S. 61 - 64},
  year      = {1996},
  language  = {en}
}
@misc{Quaisser1996,
  author    = {Quaisser, Erhard},
  title     = {Antoni, C. ; Dalena, A., Discrete applied mathematics, 66 (1996), S. 75 - 79},
  year      = {1996},
  language  = {en}
}