TY  - JOUR
AU  - S. A. Rusakov
TI  - A generalization of Post's theorem
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 1008
EP  - 1011
VL  - 193
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a11/
LA  - ru
ID  - DAN_1970_193_5_a11
ER  -