%0 Journal Article %A A. V. Maslov %T On the question of best possible estimates for Fourier coefficients with respect to orthonormal systems %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1985 %P 23-34 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1985_8_a3/ %G ru %F IVM_1985_8_a3