%0 Journal Article
%A O. A. Sarkisyan
%T On~the word and divisibility problems in semigroups and groups without cycles
%J Izvestiya. Mathematics 
%D 1982
%P 643-656
%V 19
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1982_19_3_a6/
%G en
%F IM2_1982_19_3_a6