%0 Journal Article %A Markl, Martin %T A note on closed $N$-cells in ${\mathbb R}^N$ %J Commentationes Mathematicae Universitatis Carolinae %D 1982 %P 355-357 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1982__23_2_a11/ %G en %F CMUC_1982__23_2_a11