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"Triangulation a v5 séparés dans le problème des ..."
Kenneth Appel, Wolfgang Haken, Jean Mayer (1979)
- Kenneth Appel, Wolfgang Haken, Jean Mayer:

Triangulation a v5 séparés dans le problème des quatre couleurs. J. Comb. Theory B 27(2): 130-150 (1979)

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