%0 Journal Article %A G. M. Brodskii %T Endomorphism rings of free modules over perfect rings %J Sbornik. Mathematics %D 1972 %P 138-147 %V 17 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1972_17_1_a6/ %G en %F SM_1972_17_1_a6