@article{16812,
  author       = {{Meyer auf der Heide, Friedhelm}},
  journal      = {{Automata, Languages and Programming. ICALP 1979}},
  pages        = {{411--421}},
  title        = {{{A comparison of two variations of a pebble game on graphs}}},
  doi          = {{10.1007/3-540-09510-1_32 }},
  year         = {{1979}},
}

@inbook{56209,
  author       = {{Biehler, Rolf and Steinbring, H.}},
  booktitle    = {{Beiträge zum Mathematikunterricht 1979}},
  pages        = {{68--71}},
  publisher    = {{Schroedel}},
  title        = {{{Bernoullis Theorem - Eine exemplarische Analyse des Verhältnisses der Wahrscheinlichkeitskeits-theorie zu ihren Anwendungen}}},
  year         = {{1979}},
}