@article{GDZPPN002037645,
title = {On four-colourings of the rational four-space.},
journal = {Aequationes mathematicae},
volume = {38},
year = {1989},
pages = {259-266},
zbl = {0705.05033},
url = {http://dml.mathdoc.fr/item/GDZPPN002037645}
}
Zaks, Joseph. On four-colourings of the rational four-space.. Aequationes mathematicae, Tome 38 (1989) pp. 259-266. http://gdmltest.u-ga.fr/item/GDZPPN002037645/