TY  - JOUR
AU  - N. N. Sorich
AU  - A. I. Stepanets
TI  - Simultaneous approximation of periodic functions and their derivatives
JO  - Matematičeskie zametki
PY  - 1984
SP  - 873
EP  - 882
VL  - 36
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1984_36_6_a9/
LA  - ru
ID  - MZM_1984_36_6_a9
ER  -