TY  - JOUR
AU  - L. A. Levin
TI  - Some syntactic theorems on Ju.\,T.~Medvedev's calculus of finite problems
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 32
EP  - 33
VL  - 185
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_185_1_a6/
LA  - ru
ID  - DAN_1969_185_1_a6
ER  -