%0 Journal Article %A V. A. Rodin %T Membership of the sum of a~cosine series with monotone coefficients in a~symmetric space %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1979 %P 60-64 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1979_8_a7/ %G ru %F IVM_1979_8_a7