TY  - JOUR
AU  - Zh. T. Talasbaeva
TI  - Positive Numberings of Families of Sets in the Ershov Hierarchy
JO  - Algebra i logika
PY  - 2003
SP  - 737
EP  - 746
VL  - 42
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2003_42_6_a6/
LA  - ru
ID  - AL_2003_42_6_a6
ER  -