%0 Journal Article %A E. G. Koshevoi %T Multiplicative semigroups of a class of rings without divisors of %J Algebra i logika %D 1966 %P 49-54 %V 5 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1966_5_5_a3/ %G ru %F AL_1966_5_5_a3