Неравенство Птолемея (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Неравенство Птолемея" in Russian language version.

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ams.org

mathscinet.ams.org

  • Howorka, Edward (1981), "A characterization of Ptolemaic graphs (Характеризация графов Птолемея)", Journal of Graph Theory, 5 (3): 323—331, doi:10.1002/jgt.3190050314, MR 0625074.

doi.org

  • Howorka, Edward (1981), "A characterization of Ptolemaic graphs (Характеризация графов Птолемея)", Journal of Graph Theory, 5 (3): 323—331, doi:10.1002/jgt.3190050314, MR 0625074.

mccme.ru

web.archive.org