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@article{AM2_1989__37_2-3_137304, author = {Joseph Zaks}, title = {On four-colourings of the rational four-space.}, journal = {Aequationes mathematicae}, pages = {259--266}, publisher = {mathdoc}, volume = {37}, number = {2-3}, year = {1989}, zbl = {0705.05033}, url = {http://geodesic.mathdoc.fr/item/AM2_1989__37_2-3_137304/} }
Joseph Zaks. On four-colourings of the rational four-space.. Aequationes mathematicae, Tome 37 (1989) no. 2-3, pp. 259-266. http://geodesic.mathdoc.fr/item/AM2_1989__37_2-3_137304/