TY  - JOUR
AU  - A. G. Vitushkin
TI  - The closest approximations of differentiable and analytic functions
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 418
EP  - 420
VL  - 119
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_119_3_a3/
LA  - ru
ID  - DAN_1958_119_3_a3
ER  -