%0 Journal Article %A S. V. Bochkarev %T On~the coefficients of Fourier series with respect to the Haar system %J Sbornik. Mathematics %D 1969 %P 93-109 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1969_9_1_a3/ %G en %F SM_1969_9_1_a3