TY  - JOUR
AU  - N. A. Baklanova
TI  - Minimal Elements and Minimal Covers in Rogers Semilattice of Computable Numberings in Hyperarithmetical Hierarchy
JO  - Sibirskij žurnal čistoj i prikladnoj matematiki
PY  - 2011
SP  - 77
EP  - 84
VL  - 11
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VNGU_2011_11_3_a4/
LA  - ru
ID  - VNGU_2011_11_3_a4
ER  -