TY  - JOUR
AU  - L. P. Usol'tsev
TI  - On an exponential rational trigonometric sum of special type
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 62
EP  - 64
VL  - 151
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_151_1_a15/
LA  - ru
ID  - DAN_1963_151_1_a15
ER  -