TY  - JOUR
AU  - V. M. Kopytov
TI  - Solvability of the occurrence problem in finitely generated
JO  - Algebra i logika
PY  - 1971
SP  - 169
EP  - 182
VL  - 10
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1971_10_2_a2/
LA  - ru
ID  - AL_1971_10_2_a2
ER  -