%0 Journal Article %A V. A. Tartakovskii %A P. V. Stender %T On the word problem in semigroups %J Sbornik. Mathematics %D 1968 %P 13-32 %V 4 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1968_4_1_a2/ %G en %F SM_1968_4_1_a2