TY  - JOUR
AU  - A. A. Karatsuba
AU  - M. A. Korolev
TI  - A theorem on the approximation of a trigonometric sum by a shorter one
JO  - Izvestiya. Mathematics 
PY  - 2007
SP  - 341
EP  - 370
VL  - 71
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2007_71_2_a3/
LA  - en
ID  - IM2_2007_71_2_a3
ER  -