TY  - JOUR
AU  - O. A. Sarkisyan
TI  - On~the word and divisibility problems in semigroups and groups without cycles
JO  - Izvestiya. Mathematics 
PY  - 1982
SP  - 643
EP  - 656
VL  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1982_19_3_a6/
LA  - en
ID  - IM2_1982_19_3_a6
ER  -