@article{GlaserWeigand1989,
  author    = {{H. Glaser and Hans-Georg Weigand}},
  title     = {{Das-ULAM Problem-Computergestütze Entdeckungen}},
  journal   = {{DdM (Didaktik der Mathematik)}},
  year      = {{1989}},
  volume    = {{17}},
  number    = {{2}},
  pages     = {{114--134}},
}