TY  - JOUR
AU  - A. F. Timan
TI  - A problem in approximation theory related to the superposition of functions
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 274
EP  - 275
VL  - 154
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_154_2_a8/
LA  - ru
ID  - DAN_1964_154_2_a8
ER  -