%0 Journal Article %A L. V. Ul'yanova %T Summation and absolute summation of numerical sequences by Riesz method %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1989 %P 76-78 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1989_12_a16/ %G ru %F IVM_1989_12_a16