%0 Journal Article %A J. Anusiak %T On set-theoretically independent collections of balls %J Colloquium Mathematicum %D 1964 %P 223-233 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-13-2-223-233/ %R 10.4064/cm-13-2-223-233 %G en %F 10_4064_cm_13_2_223_233