TY  - JOUR
AU  - S. Feferman
TI  - Classifications of recursive functions by means of hierarchies
JO  - Matematika
PY  - 1971
SP  - 137
EP  - 158
VL  - 15
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1971_15_6_a5/
LA  - ru
ID  - MAT_1971_15_6_a5
ER  -