%0 Journal Article %A Andrzej Nowik %T On some properties of squares of SierpiƄski sets %J Colloquium Mathematicum %D 2004 %P 221-229 %V 99 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm99-2-7/ %R 10.4064/cm99-2-7 %G en %F 10_4064_cm99_2_7