On a four-colour theorem.
Mathematica Scandinavica, Tome 39 (1976), pp. 267-270
Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1976__39_166500,
author = {Helge Tverberg},
title = {On a four-colour theorem.},
journal = {Mathematica Scandinavica},
pages = {267--270},
publisher = {mathdoc},
volume = {39},
year = {1976},
zbl = {0347.05104},
url = {http://geodesic.mathdoc.fr/item/MS2_1976__39_166500/}
}
Helge Tverberg. On a four-colour theorem.. Mathematica Scandinavica, Tome 39 (1976), pp. 267-270. http://geodesic.mathdoc.fr/item/MS2_1976__39_166500/