TY  - JOUR
AU  - L. A. Bokut'
TI  - Unsolvability of certain algorithmic problems in a class of
JO  - Algebra i logika
PY  - 1970
SP  - 137
EP  - 144
VL  - 9
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1970_9_2_a1/
LA  - ru
ID  - AL_1970_9_2_a1
ER  -