%0 Journal Article %A S. I. Adian %A G. U. Oganesyan %T Problems of equality and divisibility in semigroups with a single defining relation %J Matematičeskie zametki %D 1987 %P 412-421 %V 41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1987_41_3_a15/ %G ru %F MZM_1987_41_3_a15