%0 Journal Article %A M. S. Bespalov %T Fourier coefficients and the approximation of functions by series in a periodic multiplicative system %J Matematičeskie zametki %D 1984 %P 329-340 %V 36 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1984_36_3_a5/ %G ru %F MZM_1984_36_3_a5