TY  - JOUR
AU  - A. O. Slisenko
TI  - A~property of recursively enumerable sets containing ``hardly deducible'' formulas
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1971
SP  - 200
EP  - 207
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1971_20_a18/
LA  - ru
ID  - ZNSL_1971_20_a18
ER  -