TY  - JOUR
AU  - A. G. Babenko
AU  - Yu. V. Kryakin
TI  - Integral approximation of the characteristic function of an interval by trigonometric polynomials
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2008
SP  - 19
EP  - 37
VL  - 14
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMM_2008_14_3_a1/
LA  - ru
ID  - TIMM_2008_14_3_a1
ER  -