%0 Journal Article %A Studnička, Ivan %T Non-existence of Cartesian groups of order $2p^m$ %J Commentationes Mathematicae Universitatis Carolinae %D 1972 %P 721-725 %V 13 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1972__13_4_a10/ %G en %F CMUC_1972__13_4_a10