%0 Journal Article %A M. G. Magomed-Kasumov %T Approximation of Functions by Fourier--Haar Sums in Weighted Variable Lebesgue and Sobolev Spaces %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2014 %P 295-304 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2014_14_3_a7/ %G ru %F ISU_2014_14_3_a7