TY  - JOUR
AU  - R. Sh. Omanadze
TI  - Classes of recursively enumerable sets and $Q$-reducibility
JO  - Matematičeskie zametki
PY  - 1989
SP  - 79
EP  - 82
VL  - 45
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1989_45_2_a9/
LA  - ru
ID  - MZM_1989_45_2_a9
ER  -