@inbook{3050,
  author       = {{Alt, Helmut and Blömer, Johannes and Wagener, Hubert}},
  booktitle    = {{Automata, Languages and Programming}},
  isbn         = {{3540528261}},
  pages        = {{703--716}},
  publisher    = {{Springer-Verlag}},
  title        = {{{Approximation of convex polygons}}},
  doi          = {{10.1007/bfb0032068}},
  year         = {{1990}},
}

@inbook{16738,
  author       = {{Dietzfelbinger, Martin and Meyer auf der Heide, Friedhelm}},
  booktitle    = {{Automata, Languages and Programming}},
  isbn         = {{3540528261}},
  title        = {{{A new universal class of hash functions and dynamic hashing in real time}}},
  doi          = {{10.1007/bfb0032018}},
  year         = {{1990}},
}