TY  - JOUR
AU  - B. D. Kotlyar
TI  - Fourier coefficients and densities of subsets of the series of natural numbers
JO  - Informatics and Automation
PY  - 1987
SP  - 140
EP  - 141
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a79/
LA  - ru
ID  - TRSPY_1987_180_a79
ER  -