%0 Journal Article %A H. Steinhaus %T Gry %J WiadomoĊ›ci Matematyczne %D 1959 %P 107-120 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/wm.v3i2.2606/ %R 10.14708/wm.v3i2.2606 %G pl %F 10_14708_wm_v3i2_2606