Note on the colouring graphs.
Dirac, G.A.
Mathematische Zeitschrift, Tome 55 (1951), p. 347-353 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1951-01-01
EUDML-ID : urn:eudml:doc:169232 
@article{GDZPPN002382393,
     title = {Note on the colouring graphs.},
     journal = {Mathematische Zeitschrift},
     volume = {55},
     year = {1951},
     pages = {347-353},
     zbl = {0043.38502},
     url = {http://dml.mathdoc.fr/item/GDZPPN002382393}
}

Dirac, G.A. Note on the colouring graphs.. Mathematische Zeitschrift, Tome 55 (1951) pp. 347-353. http://gdmltest.u-ga.fr/item/GDZPPN002382393/