%0 Journal Article %A I. B. Kozhukhov %T Semigroups with right congruences of finite index %J Fundamentalʹnaâ i prikladnaâ matematika %D 1997 %P 869-878 %V 3 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1997_3_3_a14/ %G ru %F FPM_1997_3_3_a14