%0 Journal Article %A E.J. Ibrahimov %T On Fourier coefficients of some classes of functions and their applications in approximation theory %J Commentationes Mathematicae %D 2014 %P 209-246 %V 54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v54i2.704/ %R 10.14708/cm.v54i2.704 %G pl %F 10_14708_cm_v54i2_704