%0 Journal Article
%A V. F. Gaposhkin
%T Series of block-orthogonal and block-independent systems
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1990
%P 12-18
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1990_5_a1/
%G ru
%F IVM_1990_5_a1