%0 Journal Article %A S. I. Adian %T Word transformations in a semigroup that is given by a system of %J Algebra i logika %D 1976 %P 611-621 %V 15 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1976_15_6_a0/ %G ru %F AL_1976_15_6_a0