%0 Journal Article %A S. I. Adian %A G. U. Oganesyan %T On the word and divisibility problems in semigroups with a~single defining relation %J Izvestiya. Mathematics %D 1978 %P 207-212 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1978_12_2_a0/ %G en %F IM2_1978_12_2_a0