On a four-colour theorem.
Tverberg, Helge
Mathematica Scandinavica, Tome 38 (1976), p. 267-270 / Harvested from Göttinger Digitalisierungszentrum
Access to full text
Publié le : 1976-01-01
EUDML-ID : urn:eudml:doc:166500 
@article{GDZPPN00235411X,
     title = {On a four-colour theorem.},
     journal = {Mathematica Scandinavica},
     volume = {38},
     year = {1976},
     pages = {267-270},
     zbl = {0347.05104},
     url = {http://dml.mathdoc.fr/item/GDZPPN00235411X}
}

Tverberg, Helge. On a four-colour theorem.. Mathematica Scandinavica, Tome 38 (1976) pp. 267-270. http://gdmltest.u-ga.fr/item/GDZPPN00235411X/