%0 Journal Article %A Dlab, Vlastimil %T The structure of torsion-free rings (Preliminary communication) %J Commentationes Mathematicae Universitatis Carolinae %D 1968 %P 41-46 %V 09 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1968__9_1_a3/ %G en %F CMUC_1968__9_1_a3