%0 Journal Article %A T. Downarowicz %A J. Kwiatkowski %T Weak Closure Theorem fails for ${\Bbb Z}^2$-actions %J Studia Mathematica %D 2002 %P 115-125 %V 153 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm153-2-2/ %R 10.4064/sm153-2-2 %G en %F 10_4064_sm153_2_2