@article{02153150, title = {Haj\'os' theorem and the partition lemma.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {46}, year = {2005}, pages = {119-123}, zbl = {1069.20047}, language = {en}, url = {http://dml.mathdoc.fr/item/02153150} }
Szabó, Sándor. Hajós' theorem and the partition lemma.. Beiträge zur Algebra und Geometrie, Tome 46 (2005) pp. 119-123. http://gdmltest.u-ga.fr/item/02153150/