%0 Journal Article %A V. È. Gheit %T The generalized Lorentz theorem on Fourier series with monotone coefficients and its converse %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1998 %P 15-17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1998_4_a1/ %G ru %F IVM_1998_4_a1