TY  - JOUR
AU  - G. N. Kobzev
TI  - tt-degrees of recursively enumerable Turing degrees.~II
JO  - Algebra i logika
PY  - 1979
SP  - 415
EP  - 425
VL  - 18
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1979_18_4_a3/
LA  - ru
ID  - AL_1979_18_4_a3
ER  -