%0 Journal Article %A Yu. V. Nagrebetskaya %T The boundary equivalence for rings and matrix rings over them %J Algebra i logika %D 2000 %P 693-710 %V 39 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2000_39_6_a3/ %G ru %F AL_2000_39_6_a3