Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1960__8_165747, author = {B. Gr\"unbaum and E. Asplund}, title = {On a {Coloring} {Problem.}}, journal = {Mathematica Scandinavica}, pages = {181--188}, publisher = {mathdoc}, volume = {8}, year = {1960}, zbl = {0095.17002}, url = {http://geodesic.mathdoc.fr/item/MS2_1960__8_165747/} }
B. Grünbaum; E. Asplund. On a Coloring Problem.. Mathematica Scandinavica, Tome 8 (1960), pp. 181-188. http://geodesic.mathdoc.fr/item/MS2_1960__8_165747/