%0 Journal Article %A Maria MoszyƄska %T On rigid subsets of some manifolds %J Colloquium Mathematicum %D 1989 %P 247-254 %V 57 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-57-2-247-254/ %R 10.4064/cm-57-2-247-254 %G en %F 10_4064_cm_57_2_247_254