TY  - JOUR
AU  - N. M. Korobov
TI  - Trigonometric sums with exponential functions and the distribution of signs in repeating decimals
JO  - Matematičeskie zametki
PY  - 1970
SP  - 641
EP  - 652
VL  - 8
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1970_8_5_a11/
LA  - ru
ID  - MZM_1970_8_5_a11
ER  -