A problem regarding the tracing of graphs.
Ore, Oystein
Elemente der Mathematik, Tome 6 (1951), p. 49-53 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1951-01-01
EUDML-ID : urn:eudml:doc:140566 
@article{GDZPPN002073110,
     title = {A problem regarding the tracing of graphs.},
     journal = {Elemente der Mathematik},
     volume = {6},
     year = {1951},
     pages = {49-53},
     zbl = {0043.38503},
     url = {http://dml.mathdoc.fr/item/GDZPPN002073110}
}

Ore, Oystein. A problem regarding the tracing of graphs.. Elemente der Mathematik, Tome 6 (1951) pp. 49-53. http://gdmltest.u-ga.fr/item/GDZPPN002073110/