TY  - JOUR
AU  - I. Sh. Kalimullin
TI  - Relative complements in $\Delta_2^0$-degrees with respect to enumerability
JO  - Algebra i logika
PY  - 2000
SP  - 547
EP  - 566
VL  - 39
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2000_39_5_a2/
LA  - ru
ID  - AL_2000_39_5_a2
ER  -