TY  - JOUR
AU  - M. V. Sapir
TI  - Algorithmic problems in varieties of semigroups
JO  - Algebra i logika
PY  - 1988
SP  - 440
EP  - 463
VL  - 27
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1988_27_4_a4/
LA  - ru
ID  - AL_1988_27_4_a4
ER  -