TY  - JOUR
AU  - Yu. M. Gorchakov
AU  - V. M. Levchuk
TI  - The approximation of free groups
JO  - Algebra i logika
PY  - 1970
SP  - 415
EP  - 421
VL  - 9
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1970_9_4_a2/
LA  - ru
ID  - AL_1970_9_4_a2
ER  -