%0 Journal Article
%A A. A. Kyrychenko
%A Yu. S. Samoilenko
%T On the spectrum and spectrum multiplicities of a~sum of orthogonal projections
%J Algebra and discrete mathematics
%D 2004
%P 71-76
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ADM_2004_3_a5/
%G en
%F ADM_2004_3_a5