TY  - JOUR
AU  - V. V. Lebedev
TI  - Absolutely Convergent Fourier Series. An Improvement of the Beurling--Helson Theorem
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 2012
SP  - 52
EP  - 65
VL  - 46
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_2012_46_2_a5/
LA  - ru
ID  - FAA_2012_46_2_a5
ER  -