TY  - JOUR
AU  - N. I. Chernykh
TI  - Approximation of analytic functions by trigonometric polynomials on an interval that is smaller than the period
JO  - Informatics and Automation
PY  - 1971
SP  - 98
EP  - 117
VL  - 109
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1971_109_a6/
LA  - ru
ID  - TRSPY_1971_109_a6
ER  -