%0 Journal Article %A A. Hajnal %T Proof of a conjecture of B. Ruziewicz %J Fundamenta Mathematicae %D 1961 %P 123-128 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-50-2-123-128/ %R 10.4064/fm-50-2-123-128 %G en %F 10_4064_fm_50_2_123_128