TY  - JOUR
AU  - S. V. Zelenov
TI  - Zelmanowitz density theorem for rings graded by semigroup
JO  - Fundamentalʹnaâ i prikladnaâ matematika
PY  - 2001
SP  - 373
EP  - 385
VL  - 7
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FPM_2001_7_2_a4/
LA  - ru
ID  - FPM_2001_7_2_a4
ER  -