@inbook{56733,
  author       = {{Biehler, Rolf and Beck, U. and Kaiser, G.}},
  booktitle    = {{An International Review of Applications in School Mathematics: the Elusive El Dorado}},
  editor       = {{Burkhardt, H.}},
  pages        = {{68--93}},
  publisher    = {{ERIC}},
  title        = {{{Review of Applications in School Mathematics: National Report Federal Republic of Germany}}},
  year         = {{1983}},
}